Objectives This study aimed to determine the effects of the Labour Inspectorate Authority’s (LIA’s) regulatory tools on psychosocial and biomechanical work factors in the Norwegian municipal home care services. Methods A cluster-randomised controlled trial conducted in the home care services with employee questionnaire data on work factors at baseline, and 6 and 12 months after the interventions. In total, 96 eligible municipalities were randomly assigned to either the control group or one of two interventions: (1) labour inspection visits, based on the LIA’s standard inspections; and (2) guidance-through- workshops, where the participating services highlighted issues and trained labour inspectors provided guidance based on existing labour laws and regulations. Results No favourable intervention effect was observed for the inspection intervention. No effects were observed for most of the variables in the guidance intervention, although an effect was observed for the following psychosocial factors: decision control, control over work intensity and empowering leadership. However, after adjusting for multiple testing, none of the observed effects were statistically significant. Conclusion Labour inspections did not affect psychosocial and biomechanical work factors in the home care services. A favourable effect of the guidance intervention on psychosocial work factors was observed. However, this was not evident after...
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