My wife's a doc, in residency, and also Swiss, so I find myself referencing this study [1] on residency hours in Swiss residency programs over years. Bottom line: there are limitations on hours/wk and consecutive shifts, but enforcement of that is a joke + nonexistant, especially among residents (note resident's interest in maintaining their resident status and remaining 'bureaucratically blessed'). [2]
See the Albuquerque neurosurgery resident walkout for an interesting business case of the real value of surgeon residents and what might motivate them to cause a big kerfuffle in hopes of bringing about changes. [3]
I'm mostly acquainted with attending physicians who don't mind the 60hr weeks when they don't have a choice, and residents who pick up the rest of the work that attendings financially benefit from. Surgery attendings seem to be a special sort of animal.
It's just not as simple as limiting hours, unfortunately -_-
Last I heard (this was early 2010s) at least it Texas, it was capped at 80 hours/week for residents. Seems like a lot but probably better than the 100+ they used to pull.