Overtime after 40 hours Timesheet

I cannot get my formulas to flow right, think I may need another column, ultimately I need OT to be 3 hours on Friday and a possibly a column the is PAID VAC/Stat???? Column J is manually entered because depends on how many hours they take when taking vacation time and they are paid OT on Vacation and Stat hours. What I don't know why its putting 8 hours in OT when its only 3 hours....and even when there's no OT it showing 8 hours of OT for the Vac/Stat hours.....
Also columns F, G and M are hidden usually.

Try pasting the following into cell I13 then drag the fill handle down to I19: =IF(G13>40,G13-40,0)
If that doesn't produce the desired results please show or tell us what values you expect and in what cells you need them.
Let us know if you have any questions.