Purpose The purpose of this paper is to investigate line managers' influence on employee usage of a web-based system for occupational health management. Design/methodology/approach Questionnaires were used to measure line managers' transformational leadership at baseline and their change-supportive managerial activities during weeks 16-52. Employee initial (weeks 16-52) and sustained (weeks 53-144) use of the web-based system was measured by extracting their frequency of logins to the system from electronic records. Data were collected from six white-collar organizations from 2011 through 2013. Mixed Poisson regressions were used to analyze the influence of transformational leadership and change-supportive managerial activities on employee usage. Findings As predicted, line managers' change-supportive activities influenced the employees' initial and sustained use of the system. Line managers' transformational leadership had no direct effect on employees' use of the system, however transformational leadership was indirectly associated with employees' initial and sustained use of the system through line managers' change-supportive activities. Originality/value The study adds to the understanding of the role line managers' play during the implementation of occupational health interventions. The findings suggest that the line managers' change-supportive activities directed toward the intervention are important for employees' initial and sustained use of the system. The influence of transformational leadership was indirect, suggesting that line managers may need to direct their leadership behaviors toward the intervention to facilitate implementation.
Special Issue: SI