When I started my professional career and I interviewed with companies, I used to ask "Does your company support a healthy work/life balance?" Around a decade ago, I started to see the uselessness in that question and I changed the format a bit. Now I ask, "What does your company do to *encourage* a healthy work/life balance?" Chances are, everyone will say they support a work/life balance but if they have no answer to what they do to encourage it, that gives you very useful information indeed.