The payroll system is where you typically find your paystubs online or can request your paid time off.
There are two ways to find out which payroll provider your employer is using:
Ask your HR department
Find it on your paystub
Asking your HR or Payroll department for your payroll provider
If you don't know what your payroll provider is or how to find your paystub, the easiest way of finding out this information is to get in touch with your HR department and ask, "Which payroll provider do we use here?", or "Where can I find my paystubs online?".