Calculated total labor cost (phase 1-4 effort hours * project labor rate) for all estimated or actual activities falling under QSM’s four high-level lifecycle phases 1-4. One of four cost metrics in SLIM-Collaborate (see also: Development Cost, Total Cost, Other Project Costs, Total Project Cost and Phase 1-4 definitions). Does not include Other Project Costs data, which is added to SLIM-Collaborate’s Total Cost field to calculate the Total Project Cost.