When I retired I had a final check sick days, comp time, and vacation days. I paid taxes on it and rolled it into my Roth account. I rolled my work 401 into a Roth and it was a lot more than 20k. Going from the 401 to the Roth I don't remember paying a tax. That was 13 years ago and perhaps the rules have changed. I think I had 60 days to move it to the Roth.