Transformational Leadership Employee Engagement Uk Smes

Introduction

Transformational leadership has become one of the most extensively researched constructs in organisational behaviour over the past four decades, and its proposed relationship with employee engagement remains a focal point for both scholars and practitioners. The construct originated in the political science writing of Burns (1978) and was subsequently adapted for organisational settings by Bass (1985), who argued that leaders could elevate followers beyond their immediate self-interest towards collective goals. In parallel, employee engagement emerged as a distinct motivational concept, grounded in the work of Kahn (1990) and later operationalised through the work engagement tradition of Schaufeli et al. (2002). The convergence of these two literatures has produced a substantial body of research proposing that transformational leaders cultivate the psychological conditions under which employees become cognitively, emotionally and behaviourally invested in their roles.

Despite the volume of this scholarship, the evidence base is dominated by studies conducted in large organisations, public-sector bodies and multinational corporations. Comparatively little attention has been directed towards small and medium-sized enterprises, even though SMEs account for the overwhelming majority of private-sector businesses and employment in the United Kingdom. This matters because the mechanisms through which leadership shapes engagement are likely to operate differently in smaller firms, where owner-managers exercise direct and personalised influence, where formal human-resource systems are often absent, and where resource constraints limit the structural supports that larger employers take for granted. The purpose of this review is therefore twofold: to synthesise what is known about the transformational leadership–engagement relationship, and to interrogate the extent to which that knowledge transfers to the UK SME context.

Framed as the foundation for a dissertation, the review is guided by an overarching aim and three subsidiary questions. The aim is to establish, from the existing body of knowledge, how transformational leadership relates to employee engagement and whether the mechanisms linking them hold within UK SMEs. The subsidiary questions are: first, through which psychological and relational mechanisms does transformational leadership influence engagement; second, how do the structural and relational features of SMEs moderate those mechanisms; and third, where does the balance of evidence leave the field, in terms of the most pressing unanswered questions. These questions discipline the synthesis that follows, ensuring that the review functions as an argument towards a defensible gap rather than as an inventory of findings. They also make explicit the review’s orientation towards theory building: the intention is not to settle the relationship empirically, which lies beyond the scope of a secondary review, but to specify it with sufficient precision that it can subsequently be tested.

The review is organised to build a conceptual model rather than merely to catalogue findings. It begins by setting out the search strategy, then conceptualises each of the two central constructs in turn. It proceeds to examine the theoretical and empirical links between them, paying particular attention to the mediating and moderating variables that recent research has foregrounded. The SME context is then introduced as a boundary condition that may strengthen, weaken or reshape these relationships. A critical appraisal of the literature follows, after which the review consolidates its argument into an integrated conceptual framework expressed as a set of testable propositions. The framework is explicitly designed to feed a subsequent methodology chapter, and the review closes by articulating the research gap and the directions it implies.

Search Strategy and Review Methodology

This review adopts a systematic yet interpretive approach to source identification, drawing on the principles of a structured narrative review. The aim was to balance comprehensiveness with the analytical depth required to construct a theoretical framework, rather than to produce an exhaustive meta-analysis. Searches were conducted across four electronic databases selected for their coverage of management and organisational psychology scholarship: Business Source Complete, Scopus, Web of Science and Google Scholar. The search was limited to peer-reviewed journal articles, scholarly monographs and authoritative institutional reports published in English between 1978, the year Burns introduced the transforming leadership concept, and the present.

Boolean search strings combined terms from three conceptual clusters: leadership, engagement and organisational context. Representative strings included (“transformational leadership” OR “charismatic leadership”) AND (“employee engagement” OR “work engagement”) and (“transformational leadership” AND “employee engagement”) AND (“SME” OR “small business” OR “small and medium”). Reference-list mining and forward citation tracking were used to capture seminal works that keyword searching alone might have missed. The inclusion and exclusion criteria applied during screening are summarised in Table 1.

Screening proceeded in two stages. Titles and abstracts were first assessed against the criteria, after which full texts were appraised for methodological quality and theoretical contribution. This filtering yielded a core set of sources spanning foundational theory, meta-analytic syntheses and context-specific empirical studies. It should be acknowledged that a narrative strategy introduces a degree of selection subjectivity; the criteria above were applied to mitigate this, and the themes developed below were derived inductively from recurring patterns across the retained literature rather than imposed in advance.

Conceptualising Transformational Leadership

Transformational leadership is best understood against the backdrop of the transactional model it was designed to transcend. Burns (1978) distinguished between transactional leadership, which rests on an exchange of rewards for compliance, and transforming leadership, in which leader and follower raise one another to higher levels of motivation and morality. Bass (1985) reframed this dichotomy as a continuum rather than an opposition, arguing that effective leaders typically display both styles but that transformational behaviours augment transactional ones to produce performance beyond expectations. This augmentation hypothesis remains central to the construct and has important implications for the engagement literature, because it implies that transformational behaviours add discretionary motivation over and above the baseline secured by contractual exchange.

The dominant operationalisation of the construct is the four-dimensional model embedded in the Multifactor Leadership Questionnaire (Avolio and Bass, 2004). The first dimension, idealised influence, refers to the leader acting as a role model whom followers admire, respect and seek to emulate. The second, inspirational motivation, concerns the articulation of a compelling vision that imbues work with meaning and challenge. The third, intellectual stimulation, captures the leader’s encouragement of creativity, questioning of assumptions and reframing of problems. The fourth, individualised consideration, denotes attention to each follower’s needs for achievement and growth through coaching and mentoring. These dimensions are frequently collapsed into a composite transformational score in empirical work, a practice that has been criticised for obscuring the differential effects of individual behaviours (van Knippenberg and Sitkin, 2013).

The construct is not without its detractors. Van Knippenberg and Sitkin (2013) mount a sustained critique, arguing that transformational leadership suffers from conceptual ambiguity, that its dimensions are insufficiently distinguished from one another and from outcomes, and that its measurement conflates leader behaviours with their intended effects. Such critiques are instructive for a review of this kind because they caution against treating transformational leadership as a self-evidently positive and unitary phenomenon. For the purposes of the present framework, transformational leadership is defined as a relational influence process in which a leader, through idealised influence, inspirational motivation, intellectual stimulation and individualised consideration, elevates followers’ intrinsic motivation and alignment with collective goals. Retaining the four dimensions, rather than a single composite, is deliberate, since it permits the framework to specify which leader behaviours are most consequential for which facets of engagement.

A further consideration concerns the level at which transformational leadership operates. Much of the foundational theory is pitched at the organisational or senior-executive level, yet a substantial strand of research locates transformational influence in the day-to-day interactions between supervisors and their direct reports. Breevaart et al. (2014) demonstrate that transformational behaviours fluctuate daily and that these fluctuations predict daily engagement, suggesting that the construct is as much about proximal, relational conduct as about distal, visionary posture. This proximal reading of transformational leadership is especially pertinent to the SME context, where the leader is frequently the owner-manager interacting directly with staff on a daily basis.

Transformational Leadership Within the Full-Range Model

To situate transformational leadership accurately, it is necessary to locate it within the broader full-range leadership model that Bass and Riggio (2006) elaborated. This model arranges leadership along a spectrum running from laissez-faire leadership, representing the absence of leadership, through the transactional behaviours of management-by-exception and contingent reward, to the four transformational dimensions, which are presented as the most active and effective behaviours. The model is explicitly additive rather than exclusive: effective leaders are expected to deploy contingent reward to clarify expectations and reward performance, while adding transformational behaviours to generate commitment beyond compliance. This nuance is frequently lost in applied research that treats transformational and transactional leadership as competing opposites, and it matters for the present review because engagement is plausibly supported by a combination of clear transactional structure and transformational inspiration rather than by the latter alone.

The model also helps to distinguish transformational leadership from charismatic leadership, with which it is often conflated. While idealised influence shares much with charisma, transformational leadership extends beyond the emotional bond between leader and follower to encompass the intellectual and developmental dimensions captured by intellectual stimulation and individualised consideration. For the conceptual framework developed later, the implication is that the four dimensions should be measured and modelled separately, so that the specific behaviours driving engagement in SMEs can be isolated rather than assumed.

Defining and Measuring Employee Engagement

Employee engagement is a construct marked by definitional plurality, and any review must navigate this terrain carefully. Kahn (1990) provided the seminal account, conceptualising personal engagement as the harnessing of organisational members’ selves to their work roles, such that they employ and express themselves physically, cognitively and emotionally during role performance. Kahn identified three psychological conditions that determine engagement: meaningfulness, the sense that one’s work is worthwhile; safety, the feeling that one can express oneself without fear of negative consequences; and availability, the possession of the physical and psychological resources to engage. This tripartite model is theoretically generative because each condition can plausibly be shaped by leadership, providing an early bridge between the two literatures.

A second influential tradition, associated with Schaufeli et al. (2002), defines work engagement as a positive, fulfilling, work-related state of mind characterised by vigour, dedication and absorption. Vigour denotes high energy and resilience; dedication refers to a sense of significance, enthusiasm and pride; and absorption describes full concentration and immersion in work. This conceptualisation is operationalised through the Utrecht Work Engagement Scale, which has become the most widely used instrument in the field and underpins much of the quantitative evidence reviewed below. A third stream, articulated by Saks (2006), distinguishes job engagement from organisation engagement, arguing that individuals may be differentially invested in their specific role and in the organisation as a whole.

These definitions are not wholly compatible, and their coexistence has generated persistent conceptual debate. Macey and Schneider (2008) attempted to impose order by distinguishing trait engagement, state engagement and behavioural engagement, and by cautioning against the construct’s tendency to absorb adjacent concepts such as job satisfaction, organisational commitment and involvement. Their intervention underscores a recurring risk in the literature: that engagement becomes an umbrella term so capacious that it loses discriminant validity. For the present review, engagement is treated as a motivational state, following the Schaufeli tradition, while Kahn’s psychological conditions are retained as the mechanism through which antecedents such as leadership exert their influence.

The job demands-resources (JD-R) model offers a theoretical architecture that accommodates both traditions and has become the dominant explanatory framework in the engagement literature. Bakker and Demerouti (2007) propose that job resources, including supervisory support, autonomy, feedback and development opportunities, are the principal drivers of engagement because they satisfy basic psychological needs and foster a motivational process. Crucially, leadership can be theorised as a source of job resources and as a shaper of the appraisal process through which resources are perceived. This positions transformational leadership not as a direct cause of engagement but as a distal antecedent operating through more proximal resource-based and psychological mechanisms, a point that becomes central to the conceptual framework developed later.

The Consequences of Employee Engagement

The practical significance of the engagement construct, and hence of the leadership that fosters it, rests on its established links to valued organisational and individual outcomes. Across the literature, engagement has been associated with higher task and contextual performance, stronger organisational citizenship behaviour, reduced turnover intention and improved individual wellbeing. Saks (2006) found that engagement predicted job satisfaction, organisational commitment and intention to remain, positioning it as a proximal driver of retention. The theoretical rationale, consistent with the JD-R model, is that engaged employees bring energy, focus and persistence to their work, which translates into discretionary effort that exceeds the minimum required by the role. These downstream consequences are what give the leadership–engagement relationship its applied importance, since they connect a psychological state to outcomes that organisations actively seek.

For SMEs the stakes are arguably higher still, because smaller organisations have less slack to absorb the costs of disengagement: the departure of a single engaged employee can have a disproportionate effect on a firm with a limited workforce. At the same time, the literature cautions against treating engagement as uniformly beneficial, since sustained high engagement without adequate recovery has been linked to exhaustion, and inspirational leadership that continually raises expectations may contribute to this risk.

Linking Transformational Leadership to Employee Engagement

The theoretical case for a positive relationship between transformational leadership and employee engagement is strong and is supported by several complementary mechanisms. Social exchange theory (Blau, 1964) offers the most frequently invoked explanation. When leaders demonstrate individualised consideration and idealised influence, followers perceive themselves to be the beneficiaries of discretionary, relationally oriented treatment. The norm of reciprocity obliges them to respond in kind, and because the obligation cannot be discharged through contractually specified behaviour alone, it is repaid through the discretionary investment of self that constitutes engagement. Saks (2006) provides empirical support for this reasoning, showing that perceived organisational support and the quality of the exchange relationship predict both job and organisation engagement.

A second mechanism operates through the JD-R model. Transformational leaders function as a job resource and as architects of other resources: inspirational motivation enriches the meaningfulness of work, intellectual stimulation increases autonomy and the cognitive challenge of tasks, and individualised consideration provides developmental support and feedback. Through these channels, transformational leadership feeds the motivational process that the JD-R model places at the heart of engagement. This mechanism aligns neatly with Kahn’s (1990) conditions, since meaningfulness is enhanced by inspirational vision, psychological safety is fostered by supportive and consistent leader behaviour, and availability is supported by the resources leaders mobilise on followers’ behalf.

Empirically, the relationship is well established in aggregate. Judge and Piccolo (2004), in a meta-analytic test of transformational and transactional leadership, report that transformational leadership is positively associated with a range of motivational and performance outcomes, including follower motivation and satisfaction with the leader. More specifically within the engagement domain, Breevaart et al. (2014) demonstrate at the daily level that transformational leadership relates positively to work engagement, and that this effect is partly channelled through the provision of job resources such as autonomy and developmental feedback. The convergence of cross-sectional, meta-analytic and daily-diary evidence lends the relationship considerable robustness.

However, contemporary scholarship increasingly rejects a simple direct-effect account in favour of mediated and moderated models. Several mediators recur across the literature. Psychological empowerment, trust in the leader and perceived meaningfulness have each been proposed as the proximal states through which transformational behaviour translates into engagement. The logic is that transformational leadership does not act on engagement directly but by altering followers’ psychological appraisals of their work and their relationship with the leader. Treating these as mediators is theoretically preferable to a direct-effect model because it specifies the causal pathway and renders the framework testable through formal mediation analysis.

Moderators are equally important and are where the SME context becomes analytically decisive. The strength of the transformational leadership–engagement relationship is likely to depend on contextual conditions such as organisational structure, the physical and relational proximity of leader and follower, the availability of alternative sources of support, and the degree of role clarity. In large, bureaucratic organisations, the influence of a senior transformational leader may be diluted by layers of hierarchy and by the mediating role of formal HR systems. In smaller firms, by contrast, the leader’s influence is less filtered, which may amplify both the positive and the negative effects of leadership on engagement. This moderating potential is not merely a methodological nuance; it is the substantive justification for a review that treats the SME as a distinct context rather than a smaller version of the large firm.

Competing and Complementary Leadership Styles

Transformational leadership does not exist in isolation, and a rigorous review must consider how it relates to adjacent leadership constructs that also claim engagement-relevant effects. Leader-member exchange (LMX) theory, for instance, foregrounds the quality of the dyadic relationship between a leader and each follower, and a high-quality exchange relationship has been consistently linked to engagement. There is conceptual overlap between high LMX and individualised consideration, and some scholars treat relationship quality as a mechanism through which transformational leadership operates rather than as a rival explanation. Similarly, servant leadership and authentic leadership emphasise, respectively, the leader’s orientation towards follower growth and the leader’s self-awareness and moral integrity; both have been associated with engagement and both share conceptual territory with transformational leadership’s developmental and ethical dimensions.

Recognising these neighbouring constructs tempers any claim that transformational leadership is uniquely responsible for engagement; the more defensible position is that it is one of several positively oriented styles whose effects may be partly shared and partly distinct. The present framework treats relationship quality and trust as mediators internal to the transformational process rather than as competing styles, and in the SME setting, where leadership is relational and personalised, the boundaries between these constructs are likely to blur further.

The SME Context in the United Kingdom

Small and medium-sized enterprises constitute the structural backbone of the UK economy. Official business population estimates consistently indicate that SMEs account for the large majority of private-sector businesses and a substantial share of private-sector employment and turnover (Department for Business, Energy and Industrial Strategy, 2022). Yet the leadership and engagement literatures have, until recently, treated the SME as a residual category, implicitly assuming that findings derived from large organisations generalise downward. This assumption is questionable on several grounds that together establish the SME as a meaningful boundary condition for the relationships reviewed above.

First, leadership in SMEs is typically personalised and concentrated. The owner-manager often embodies the firm’s vision, values and culture, and interacts directly with employees rather than through intermediary layers of management. This proximity suggests that the proximal, relational reading of transformational leadership advanced by Breevaart et al. (2014) is especially apposite, and that idealised influence and individualised consideration may carry disproportionate weight because they are enacted face to face. The same proximity, however, means that inconsistent or self-interested leader behaviour is highly visible and may erode psychological safety more rapidly than in larger firms where the senior leader is distant.

Second, SMEs generally lack the formalised human-resource infrastructure that larger organisations use to support engagement. Structured development programmes, formal recognition schemes, employee-voice mechanisms and sophisticated reward systems are frequently absent or rudimentary. In the language of the JD-R model, certain job resources that would otherwise buffer the effects of leadership are simply unavailable, which may increase the relative importance of the leader as a direct source of resources. Where the leader is the principal, and sometimes the sole, provider of meaningfulness, feedback and developmental support, the leadership–engagement link may be stronger in SMEs than the large-firm literature would predict.

Third, SMEs operate under acute resource constraints and heightened environmental sensitivity. Limited financial slack, exposure to economic shocks and dependence on a small number of clients or markets create a climate in which employees may experience greater job insecurity. This has ambivalent implications for engagement. On one hand, transformational leadership may be particularly valuable in such conditions, providing the vision and reassurance that sustain vigour and dedication in the face of uncertainty. On the other hand, the demands that accompany resource constraint may deplete the availability condition that Kahn (1990) identified, limiting the capacity of even the most inspiring leader to generate engagement.

A fourth consideration is the heterogeneity of the SME category itself. The statutory definition spans micro-enterprises of fewer than ten employees through to medium-sized firms approaching 250, and these sub-categories differ markedly in their leadership dynamics: in a micro-business the owner-manager may know every employee personally, whereas a medium-sized enterprise may have introduced intermediate supervisors and rudimentary HR processes. Sectoral variation compounds this, so any framework applied to SMEs must treat firm size and sector as potential sources of variation rather than assuming a homogeneous category.

Taken together, these characteristics suggest not that transformational leadership matters less in SMEs, but that it operates through a different configuration of mechanisms and under different boundary conditions. The absence of formal HR systems elevates the leader’s direct role; the proximity of the owner-manager intensifies both positive and negative effects; resource constraint introduces competing pressures; and the heterogeneity of the sector cautions against treating SMEs as a single type. These context-specific dynamics are largely absent from the mainstream literature, which is overwhelmingly derived from large and public-sector organisations, and they constitute the principal rationale for the research gap identified below.

Critical Appraisal of the Literature

While the body of scholarship reviewed here is substantial and broadly convergent, it exhibits several limitations that temper confidence in its conclusions and that shape the design of future research. The most pervasive concern is methodological. A large proportion of the empirical evidence is cross-sectional and relies on self-report questionnaires, with leadership and engagement frequently measured from the same source at the same point in time. This design is vulnerable to common-method bias, which can inflate observed associations, and it precludes strong causal inference. The daily-diary approach adopted by Breevaart et al. (2014) represents a methodological advance, but such designs remain the exception rather than the norm.

A second limitation concerns construct clarity and measurement. As noted earlier, both central constructs are contested. The tendency to collapse transformational leadership into a single composite score obscures the differential effects of its dimensions and, in light of van Knippenberg and Sitkin’s (2013) critique, risks conflating leader behaviour with its intended outcomes. Engagement, meanwhile, is measured inconsistently across studies, with some using the UWES, others adopting Saks’s distinction between job and organisation engagement, and still others treating engagement as functionally equivalent to satisfaction or commitment. This heterogeneity complicates cross-study comparison and cumulative theory building.

A third limitation is the dominance of large-organisation and Western, and frequently North American, samples. The near absence of SME-specific evidence, and particularly of UK SME evidence, means that the mechanisms and boundary conditions discussed above are largely theorised rather than tested in the context to which this review ultimately speaks. Where SME studies do exist, they are often small in scale, drawn from a single sector, and reliant on convenience sampling, which limits their generalisability. There is also a tendency towards positivity bias in the literature, with transformational leadership presented as unambiguously beneficial and the potential for its dark side, such as dependency, burnout from excessive inspirational demands, or the destabilising effect of charismatic leader departure in a small firm, under-examined.

A fourth limitation concerns the cumulative character of the field and the possibility of publication bias. Because transformational leadership enjoys strong theoretical prestige, studies reporting the expected positive associations may be more likely to be published than those reporting null results, subtly inflating the apparent consistency of the evidence, and the reliance on a small number of dominant instruments risks entrenching their built-in assumptions rather than developing measures appropriate to smaller firms.

Finally, the literature displays a relative neglect of mediating and moderating processes in combination. Although individual mediators and moderators have been studied, integrated models that specify the full pathway from leader behaviour through psychological states to engagement, while allowing context to moderate those pathways, remain comparatively rare. This fragmentation is precisely what a theoretically led review is positioned to address, and it motivates the integrative framework presented in the following section.

Towards a Conceptual Framework

Synthesising the foregoing analysis, this review proposes an integrated conceptual framework in which transformational leadership influences employee engagement through a chain of psychological mechanisms, with the SME context acting as a moderating boundary condition. The framework is expressed as a set of propositions designed to be operationalised in a subsequent methodology chapter. It positions the four dimensions of transformational leadership as the independent variable, engagement as the dependent variable, a set of psychological states as mediators, and SME-specific characteristics as moderators.

The framework rests on the following logic. Transformational leadership behaviours shape followers’ psychological appraisals of their work and their relationship with the leader. These appraisals, which draw together Kahn’s (1990) psychological conditions and the JD-R notion of perceived job resources, constitute the proximal drivers of engagement. The leadership–engagement relationship is therefore not direct but mediated, and the strength of the mediated pathways varies according to the organisational context in which they operate. The propositions below formalise this reasoning:

1. P1: Transformational leadership is positively associated with employee engagement, such that higher levels of idealised influence, inspirational motivation, intellectual stimulation and individualised consideration predict higher vigour, dedication and absorption.
2. P2: The relationship in P1 is mediated by perceived meaningfulness and psychological safety, consistent with Kahn’s (1990) psychological conditions.
3. P3: The relationship in P1 is additionally mediated by perceived job resources, consistent with the job demands-resources model (Bakker and Demerouti, 2007), such that transformational leadership increases engagement by enriching autonomy, feedback and developmental support.
4. P4: Trust in the leader, generated through social exchange (Blau, 1964), functions as a relational mediator linking idealised influence and individualised consideration to engagement.
5. P5: The SME context moderates the mediated relationships, such that leader proximity and the absence of formal HR systems strengthen the direct influence of transformational leadership on the psychological mediators.
6. P6: Resource constraint, as a feature of the SME context, moderates the relationship between the psychological mediators and engagement, such that acute insecurity weakens the translation of favourable appraisals into sustained engagement.

Two features of this framework merit emphasis. First, it deliberately retains the disaggregated dimensions of transformational leadership rather than a composite, enabling future empirical work to establish which leader behaviours are most consequential for engagement in SMEs. This responds directly to van Knippenberg and Sitkin’s (2013) call for greater specificity. Second, it treats the SME context as a moderator rather than a mere sampling frame, which converts an under-examined setting into a theoretically meaningful boundary condition. The framework is intentionally parsimonious, specifying a small number of well-theorised mediators and moderators that can realistically be tested within the scope of a Masters dissertation, whether through a cross-sectional survey employing structural equation modelling or a mixed-methods design combining survey data with interviews of owner-managers and employees.

Operationalising the framework would involve measuring transformational leadership through an established instrument such as the Multifactor Leadership Questionnaire, engagement through the Utrecht Work Engagement Scale, and the mediators through validated scales for meaningfulness, psychological safety, perceived job resources and trust in the leader. Firm size, sector and a proxy for resource constraint would be captured as moderators, and demographic and tenure variables would be included as controls to reduce the risk of spurious association. To mitigate the common-method bias identified in the critical appraisal, a design that separates the measurement of leadership and engagement, whether temporally or by source, would be preferable. Specifying the framework at this level of detail is what allows the review to function as a genuine bridge to the methodology chapter rather than as an abstract model, since each proposition maps onto a measurable relationship and an appropriate analytic technique.

Research Gap and Future Directions

The preceding synthesis exposes a clear and defensible research gap. The relationship between transformational leadership and employee engagement is well established in large organisations and Western, predominantly North American, samples, yet it remains substantially untested in the UK SME context, where the mechanisms connecting the two constructs are theorised to operate under distinct boundary conditions. The gap is not simply one of population coverage; it is a theoretical gap concerning whether, and how, the established mediated model holds when leadership is personalised, when formal HR infrastructure is absent, and when resource constraint introduces competing pressures on the psychological availability of employees.

Several directions follow from this gap. First, there is a need for context-sensitive empirical work that tests the mediated-moderated framework proposed above within UK SMEs, ideally using designs that reduce common-method bias, such as multi-source or time-lagged data collection. Second, qualitative inquiry into the lived experience of engagement in small firms would illuminate the mechanisms that survey instruments struggle to capture, particularly the role of the owner-manager relationship. Third, future research should attend to the potential dark side of transformational leadership in SMEs, including over-dependence on a charismatic founder and the engagement risks associated with leadership succession. Addressing these directions would advance both the theoretical understanding of engagement and the practical capacity of SME leaders to foster it.

The practical significance of closing this gap is considerable. SME owner-managers rarely have access to the leadership-development programmes available to large employers, yet the behaviours comprising transformational leadership are learnable and their engagement benefits may be amplified in smaller firms. Research identifying which behaviours matter most, and under which conditions, could inform low-cost guidance tailored to the small firm. Given the weight of SMEs in national employment, such guidance would be relevant not only to individual businesses but to the broader policy objective of raising workforce engagement and productivity across the economy.

Conclusion

This review has synthesised the theoretical and empirical literature on transformational leadership and employee engagement, and has interrogated its applicability to UK small and medium-sized enterprises. It has shown that the two constructs, though independently contested, are connected by a well-theorised set of mechanisms grounded in social exchange theory, the psychological conditions model and the job demands-resources framework. The weight of evidence supports a positive association, but contemporary scholarship rightly frames this association as mediated by psychological states and moderated by organisational context rather than as a simple direct effect.

The central contribution of the review is its argument that the SME context is not a neutral backdrop but a substantive boundary condition that reshapes the leadership–engagement relationship. The concentration and proximity of leadership, the absence of formal HR systems, the pressures of resource constraint and the heterogeneity of the sector together suggest that transformational leadership may operate through a distinct configuration of mechanisms in smaller firms. By consolidating this argument into a set of testable propositions and specifying how they might be measured, the review provides a conceptual framework ready to inform the design of a dissertation methodology chapter. In doing so, it addresses a genuine gap in the literature and offers a foundation for research with both theoretical and practical significance for the UK economy’s largest employer group.

References

• Avolio, B.J. and Bass, B.M. (2004) Multifactor Leadership Questionnaire: Manual and Sampler Set. 3rd edn. Menlo Park, CA: Mind Garden.
• Bakker, A.B. and Demerouti, E. (2007) ‘The job demands-resources model: state of the art’, Journal of Managerial Psychology, 22(3), pp. 309–328.
• Bass, B.M. (1985) Leadership and Performance Beyond Expectations. New York: Free Press.
• Bass, B.M. and Riggio, R.E. (2006) Transformational Leadership. 2nd edn. Mahwah, NJ: Lawrence Erlbaum Associates.
• Blau, P.M. (1964) Exchange and Power in Social Life. New York: Wiley.
• Breevaart, K., Bakker, A.B., Hetland, J., Demerouti, E., Olsen, O.K. and Espevik, R. (2014) ‘Daily transactional and transformational leadership and daily employee engagement’, Journal of Occupational and Organizational Psychology, 87(1), pp. 138–157.
• Burns, J.M. (1978) Leadership. New York: Harper & Row.
• Department for Business, Energy and Industrial Strategy (2022) Business Population Estimates for the UK and Regions. London: BEIS.
• Judge, T.A. and Piccolo, R.F. (2004) ‘Transformational and transactional leadership: a meta-analytic test of their relative validity’, Journal of Applied Psychology, 89(5), pp. 755–768.
• Kahn, W.A. (1990) ‘Psychological conditions of personal engagement and disengagement at work’, Academy of Management Journal, 33(4), pp. 692–724.
• Macey, W.H. and Schneider, B. (2008) ‘The meaning of employee engagement’, Industrial and Organizational Psychology, 1(1), pp. 3–30.
• Saks, A.M. (2006) ‘Antecedents and consequences of employee engagement’, Journal of Managerial Psychology, 21(7), pp. 600–619.
• Schaufeli, W.B., Salanova, M., González-Romá, V. and Bakker, A.B. (2002) ‘The measurement of engagement and burnout: a two sample confirmatory factor analytic approach’, Journal of Happiness Studies, 3(1), pp. 71–92.
• van Knippenberg, D. and Sitkin, S.B. (2013) ‘A critical assessment of charismatic-transformational leadership research: back to the drawing board?’, The Academy of Management Annals, 7(1), pp. 1–60.