you guys are not taking overtime into consideration.
If you are paying overtime on 55 hours that is the same as paying 62.5 hrs.
4 x 55hrs (62.5) = 250 paid hrs
5 x 42hrs (43) = 212 paid hrs
That's a difference of 38 paid hrs. By paying 4 guys 15hrs of overtime each you are essentially paying more than you would for 6 guys each working 40hrs.
Why do people not respect us as they do other tradesmen? Because every Tom, Dick, and Harry doesn't think he can be a plumber or electrician!