Is it showing up on the bottom where it shows how much VAC, OPD and OPW time you have left?
I agree with
@tadpole.
Some states, like CA, OR, AZ mandate employers give their employees a certain amount of sick days. The Central has no sick days pay, so you may have some based on your States' laws.
PST...Paid Sick Time or Protected Sick Time, and it is paid time.