I counter-act the unlimited vacation thing during onboarding (if not interviewing) by setting expectations: "I consider a reasonable amount of vacation to be X(

I counter-act the unlimited vacation thing during onboarding (if not interviewing) by setting expectations: "I consider a reasonable amount of vacation to be X(=3) weeks, does that sound reasonable to you?". Then I track it myself and make sure I take every day. (A very good sign, and really the only way to ethically do unlimited, is when a company sets a minimum amount of time off.)