I rarely see managment working (I work on days Chassis 6/7 relief), I would love to see one working and would write them up in an instant if I saw it.
As for FMLAs, now this is a crap shoot. I know people who abuse them weekly and screw over the rest of the team. I have a headache, I am going home. Amazingly my kid gets sick at school every thursday, i am going home. It's supposed to be 90 degrees today?? Screw that I am going home via fmla.
If i get a headache, i take an asprin, If i want a thursday off, i use personal time, If it is gonna be a hot day I dress accordingly and stay hydrated, if my kid is feeling under the weather I have a back up plan so I do not have to miss work.