That's another worker protection that I keep missing when I make lists.
The protection of 'on call' (in any type) equated to a type of work. Maybe not paid at full rate, but still compensated for as personal activities must be interrupt-able and other work cannot be sought.
Also the protection of a regular and predictable schedule with long lead times.
Very much this. I've family members that work for a freight train company. The schedule is brutal: get a call, have 2 hours to get to work, drive a train for 10 hours, get 10 hours off (often away from home), and then you are back on call. They are expected to be well-rested for work when they get the call. The pay is good, comparatively, but it allows no personal life and no chance of other work or hobbies on even a semi-regular basis. They are only closed for 2 holidays - christmas and new year - and it takes a toll on health.
The protection of 'on call' (in any type) equated to a type of work. Maybe not paid at full rate, but still compensated for as personal activities must be interrupt-able and other work cannot be sought.
Also the protection of a regular and predictable schedule with long lead times.