Daily Wage and Overtime Calculation for Contract Workers in India: Complete Formula Guide

Calculating daily wages and overtime for contract workers sounds straightforward until you actually sit down to do it. The daily wage calculation formula in India depends on which wage schedule applies, how many working days the month has, what the state minimum wage is, and how overtime hours are defined under the applicable rules. Get any one of these wrong and the payslip is incorrect.

This guide covers the complete formula, worked examples for different worker categories, and the overtime rules that apply to contract staff. It is written for HR managers and payroll teams at manpower companies, contractors, and staffing agencies who process these calculations every month.

How Daily Wages Are Calculated in India

Most state minimum wage schedules in India publish rates as monthly figures. To arrive at the correct daily rate, you divide the monthly wage by the number of working days assumed in that schedule. The standard divisor under most state notifications is 26, representing 26 working days in a month (with 4 weekly rest days unpaid).

The formula works like this:

Once you have the daily rate, calculating the gross wages for the month is simple:

This is the starting point. On top of this, any overtime earned during the month is added separately before deductions are applied.

When to Use 26 Days vs 30 Days as the Divisor

Some HR teams use 30 days as the divisor, which gives a lower daily rate. This is technically incorrect for most employments. The Minimum Wages Act and most state notifications use 26 as the standard working days divisor. Using 30 understates the daily rate and therefore underpays workers relative to the applicable minimum wage.

Use 26 unless the specific state notification for your employment category explicitly specifies a different divisor.

Overtime Rules for Contract Workers in India

Overtime for contract workers is governed by the Minimum Wages Act, 1948, and in many cases also by the Factories Act or Shops and Establishments Act depending on the nature of the workplace. The fundamental rule is consistent across these laws: overtime must be paid at twice the ordinary rate of pay.

What Counts as Overtime

A worker is entitled to overtime wages when they work beyond the normal working hours. The thresholds are:

• Daily threshold: More than 9 hours in a single day
• Weekly threshold: More than 48 hours in a week
• Security guards: Often on 12-hour shifts. Hours beyond 8 in a standard shift or beyond 48 per week attract overtime
• Construction workers: Governed by the Building and Other Construction Workers Act. Normal hours are 9 per day and 48 per week

If a worker works 10.5 hours in a day, they are entitled to overtime for 1.5 hours. If a worker works 52 hours in a week, they are entitled to overtime for 4 hours, even if no single day exceeded 9 hours.

The Overtime Calculation Formula

Full Monthly Calculation With Overtime

Putting it all together, here is how a complete monthly calculation looks for a contract worker:

1. Step 1: Establish daily rate (Monthly Minimum Wage / 26)
2. Step 2: Multiply by days worked to get basic gross wages
3. Step 3: Calculate overtime hours from attendance records
4. Step 4: Calculate overtime pay (Hourly Rate x 2 x OT Hours)
5. Step 5: Add basic gross + overtime pay = Total Gross Wages
6. Step 6: Apply deductions: PF (12% of basic), ESIC (0.75% of gross), PT if applicable
7. Step 7: Net Pay = Total Gross Wages minus Total Deductions

Every step depends on accurate attendance data. If overtime hours are logged incorrectly or not logged at all, the resulting calculation will be wrong regardless of how correct the formula is.

Wage Calculation Examples by Worker Category

Here are worked examples for the three categories that appear most often in manpower company payroll.