Authors’ contributions
The conception of the Prevail programme was completed by NSG in collaboration with HD. NSG and RJS wrote the Prevail intervention programme. HD arranged for a cross-section of DVLA staff to give feedback on draft versions of the psychological intervention and gave advice on practical implementation of the programme to staff and managers. RJS and NSG designed the RCT, registered the trial, wrote the protocol, and analysed the data. RB gave expert advice on Data Protection issues and helped with writing the Data Protection Impact Assessment for this project. RB gathered and provided data from Human Resources about sick leave. All authors read and approved the final manuscript.