When I finally decided to enter an evening outpatient rehab program, I needed to give my employer some information because a) my job involves frequent travel which I couldn't do during the program and b) because I'd need to leave work a bit early
So, I simply told my boss that I had some health issues that would require daily attention for the next 6 weeks. I told him it was rather personal and he didn't ask questions. He did run it past HR to make sure I didn't need to do anything with FMLA because he wanted to make sure I was protected. I was so relieved! He's been very accommodating so far. I've got just a week and a half left of treatment!