Benefits end date after a layoff after 5 years as an IT help-desk technician

I was told my coverage ends on my last day, but the letter says the end of the month. I do not want to be surprised by a bill. Did coverage match what HR said?

Keep a copy of any coverage confirmation in case of later disputes.

Thanks for writing this out. I went through something close to it 7 months ago, and it settled down once I kept a simple log of every call and form.