When does my employer coverage actually end?, home health aide here

I was told my coverage ends on my last day, but the letter says the end of the month. There are 15 people counting on me, so I am trying to be careful. The letter is unclear about dental and vision. What should I do about appointments?

Dental and vision sometimes end on a different date from medical. Mine did.

Ask HR to confirm the exact date in writing. I also called the insurance company to double-check.