Purpose: This paper aims to examine whether participation in training and development (T&D) events is associated with employees' affective commitment and propensity to enact innovative behaviours in small professional services firms. The study also investigates associations between both attitudes towards T&D and policy and practice supportive of T&D and levels of participation in T&D events. Design/methodology/approach: Data from 203 employees in small professional services firms employing 50 or fewer staff were analysed using regression analysis and PROCESS macro. Findings: Only policy and practice supportive of T&D was associated with participation levels. Participation in T&D events was positively related to affective commitment. Furthermore, employees who participated in more T&D events were more likely to enact innovative behaviours, while affective commitment mediated the positive relationship between number of T&D events attended and innovative behaviours. Contrary to expectations, neither participation in just training nor participation in just development was associated with either attitudes or behaviours. Practical implications: The findings have important implications for small firms which tend to rely on wholly work-based experiences for the development of employees' knowledge and skills. Such an approach to learning for work may inadvertently shape a workforce that lacks commitment to the organisation and that has a diminished capacity for innovative behaviours. Originality/value: There is limited research on how T&D affects attitudes and behaviours in small firms. Large and small firms are fundamentally different, thus findings from studies in large firms may not extend to small firms.