In the 46 years since Dolly Parton released "9 to 5," the anthem of the American workplace, both jobs and the benefits attached to them have changed beyond recognition. A new study finds that volatile work hours are quietly eroding access to employer-provided health insurance, leaving millions of workers exposed at exactly the moment they can least afford it.

The link is straightforward once seen. Eligibility for employment-based insurance is often tied to working a minimum number of hours, and when schedules shift unpredictably from week to week, workers can fall below that threshold without any change in their employer or their job title. The result is a slow leak in the safety net, one that is easy to miss because it happens gradually and affects people who are, by any normal measure, employed. The study highlights the hidden costs of a labour market built on flexibility for employers rather than stability for workers. As scheduling practices continue to evolve, understanding their consequences for health coverage becomes essential to any serious conversation about the future of work.