It depends - do you get ADOs? Then you would work a 40hr week and be paid for 38hr and accrue the 2hr towards the ADO...

If you worked 40 hours (including the PH) then you would have been paid for 30.4 hours of normal, plus 7.6 hours of PH (but should be a higher rate than your normal hourly rate) and then another part for the hours excess of 38 ITMS.

Happy to help further if you want to PM me the details of your pay slip