For definition let us say your church project described is "heavy construction" . All specimen hourly rates include all benefits but not travel perdiem. Skilled workers range $25-40 @ hour.
Crew supervisors range $30-50 @ hour. General foremen $50-150 @ hour. General labor (local hires) $7.50 @ hour, no benefits except SS and workmens's comp where required. These numbers were not taken from specimen TF jobs but from the general heavy contracting industries. A very large company headquartered locally provided the data. Overtime @ 1.5 rate begins 40 hrs, double time on Sundays or over 60 hours, triple time on federal holidays.