I’ve always wondered about that. Not like a mental wellness day or what not, but if I’m feeling pretty stressed out with a life outside of work situation I can’t call a general practice doctor to get a note for that. This job that has a couple hundred lives in our hands every working shift, the IMSAFE should be a full stop guard against company pressure. If you have sick time you earned it right? There will always be abusers of it, even with Dr notes, so why bother.
If during an accident investigation they found evidence showing a pilot wanted to call out for this particular flight but was afraid of reprimand, that would be a big issue for the company, especially if the sensationalist media hears about it.