STRENGTHS AND LIMITATIONS OF THIS STUDY
The CO-WORK-CARE trial was accomplished entirely in primary care.The intervention was adapted to a level possible to conduct in a Swedish primary care context with low level of resources for direct workplace intervention and cooperation.The intervention model was person-centred and emphasised the individual’s perceptions of workplace conditions facilitating own return to work.COVID-19 could have had possible impact on the last months of follow-up for 12 months sick leave duration, however, this effect should have been comparable in the control group.The complexity of the intervention based on the individual patient’s preferences, needs and values, a structured cooperation among general practitioner, care manager and rehabilitation coordinator and a person-centred dialogue meeting with employer could be called into question concerning possible biasing factors.