Labour Cost Calculator
Enter the working details below to calculate total labour costs.
Guided Mode (DIY-friendly)
Fill time first, then rates, then review before calculating.
Time
Rates
Review
Work Time
NAIBC / IRC codes
References & Sources
Standards Cited
- US DOL / Davis-Bacon Act — US Department of Labor — Prevailing Wage Determinations (Davis-Bacon Act)
Defines prevailing wage requirements and labour classifications for federally funded construction projects in the US - RSMeans — RSMeans Data — Labour Cost Estimating
Industry-standard labour rates and crew productivity data for North American construction
Formulas Used
- Regular Labour Cost:
regularCost = totalRegularHours x hourlyRate x numberOfWorkers
Source: Standard payroll calculation - Overtime Cost:
overtimeCost = overtimeHours x (hourlyRate x overtimeRate) x numberOfWorkers
Source: Standard payroll calculation (FLSA overtime provisions) — Default overtime multiplier is 1.5 (time and a half) per FLSA - Total Labour Cost:
total = regularCost + overtimeCost
Source: Standard payroll calculation - Daily to Hourly Rate:
hourlyRate = dailyRate / hoursPerDay
Source: Standard calculation - Weekly Cost:
weeklyCost = dailyCost x 5
Source: Standard US construction working week
Key Assumptions
- Standard working day is 8 hours — US Department of Labor / FLSA
- Standard working week is 5 days (Monday to Friday) — US construction industry standard practice
- Overtime rate defaults to 1.5x (time and a half) per FLSA requirements — Fair Labor Standards Act (FLSA)
- Monthly cost calculated as 4 weeks (not calendar month) — Standard construction industry budgeting convention