From hire, we get 13 days of annual leave and 13 days of sick leave (4hr per pay period for each), plus the federal holidays are "give me's".  After 8 years it goes up to 20 days of annual (6 hrs per pay period) but remains 13 days of sick, and then after 15 years it goes to 26 days of annual (8 hrs per pay period) and still 13 days of sick.  You can build up sick leave almost as high as you want, but depending on your retirement plan hired under is how much you can be paid for at that time.  Maximum of 240 hours of AL can be carried over from one year to the next.  Very generous....