This document discusses Gross Profit Per Man Day (GPMD) as an alternative to using mark-up percentages when pricing jobs. It explains that GPMD reflects overhead costs, labor costs, and profit targets per billable hour. An example company, Comfort Heating & Air, is used to demonstrate how to calculate GPMD. Comfort analyzes its monthly overhead costs, billable hours, direct labor costs, and profit target to determine its GPMD should be $134 per hour. This allows the company to know if invoicing at the $134 rate will achieve its monthly profit goal, unlike using different mark-ups on different jobs.