How do i find out if my employer is actually paying tax with the deductions from my pay?

my employer claims he deducts taxes from my pay. is there a number i can call to check that he is actually paying tax with the money he deducts off my pay check?? the calculations make sense but he isn't giving me pay stubs even though i have been asking for them for months. i know that isn't legal...i am planning on quitting very soon but i need to make sure he isn't using money off my paycheck for himself.