going to a medical or dental appointment Hm... the Family and Medical Leave Act is from 1993, so maybe this was legal back then. I seriously doubt it is now.

going to a medical or dental appointment Hm... the Family and Medical Leave Act is from 1993, so maybe this was legal back then. I seriously doubt it is now. griping about working conditions This sounds dangerously close to forbidding the initial steps of labor organization. Which also sounds like the sort of thing that would be illegal.