A randomized controlled trial comparing independent medical evaluation (IME) to treatment as usual (TAU). Participants will be individuals reaching six months uninterrupted sickness absence. Treatment as usual (TAU) is normal follow-up by a general practitioner (GP).

A randomized controlled trial in a Norwegian context, involving an effect evaluation, a cost-benefit evaluation and a qualitative evaluation. Independent medical evaluation (IME) will be compared to treatment as usual (TAU). Independent medical evaluation (IME) will comprise a consultation with an independent general practitioner (IME GP) who will assess whether the sick listed worker has been given eligible and available opportunities in return to work follow-up in Norway. The independent medical evaluation general practitioner (IME GP) will write a short report that is sent to the treating general practitioner as input from a colleague. The report can be used in the follow-up of the sick listed participant. The participants in the treatment as usual (TAU) group will not receive any other follow-up than normal follow-up by the treating general practitioner. The qualitative evaluation will be conducted to gain insight into the experiences of the general practitioners and the participants.

Inclusion Criteria:

• Participants on sick leave with an International Classification of Primary Care-2 diagnosis will be recruited through the Norwegian Labour and Welfare Administration's (NAV) registries, when reaching 22 weeks of sick leave (full or graded).

Exclusion Criteria:

• People with International Classification of Disease-10 diagnoses, cancer or dementia.
• People who are pregnant.