An experimental study on the impacts of benefits and vocational counseling for disabled veterans in the United States, measuring effects on the return to work through average hours worked.
It identifies time worked through a timeline follow-back calendar, measuring the change in days worked in the 28 days preceding the final study measurement.
Here, it finds the sessions having a significant increase on more waged days worked, with an additional three days for the 28 preceding days on average.
One limitation is the inability of the study to locate an active ingredient:
Though the intervention clearly aims at strengthening some aspect of individual agency, the exact mediators are not clear, with neither beliefs about work, beliefs about benefits, nor provided service use for mental health or substance abuse impacted significantly.
