Q: Can my time as a nonappropriated fund employee be used toward retirement now that I work in a GS position? I worked twice as a NAF employee with a break in service, and I have been trying to get credit for that time. I received an e-mail today saying that because there was a service break of more than three days, my time will not count. A: Your agency is correct. Your NAF time isn’t creditable if you had a break in service of more than three calendar days.