Labour Cost Calculator
Calculate labour costs for your construction projects. Enter days, hours, rates, and overtime to get accurate cost estimates for your workforce.
How It Works
Enter the number of days, hours, hourly rate, and number of workers. The calculator handles overtime at different rates (time and a half, double time, etc.).
Features
- Calculate by days, hours, or both combined
- Handle multiple workers at once
- Overtime calculations with custom multipliers
- Weekly and monthly cost projections
- Custom hours per day (for part-time or longer shifts)
Typical Overtime Rates
- Time and a half: 1.5× base rate (common for weekday overtime)
- Double time: 2× base rate (common for weekends/bank holidays)
- Triple time: 3× base rate (rare, special occasions)
CACalifornia Building Code (Title 24)
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