This is a pretty well researched area and there is some well established data available on the topic that establishes the mechanisms that link worklessness and inactivity, to poor health outcomes. The Royal Australasian College of Physicians have put out a position statement and paper, along with recent data updates that explain some of this.. Worth a read!

https://www.racp.edu.au/advocacy/division-faculty-and-chapter-priorities/faculty-of-occupational-environmental-medicine/health-benefits-of-good-work