Overtime pay is the higher rate an employer pays for hours worked beyond a defined threshold — usually a standard working day or week. It rewards extra effort and, in most countries, it is a legal requirement rather than a courtesy. Getting the calculation right protects the business from claims and keeps payroll fair. The hard part is rarely the multiplication; it is defining the regular rate the multiplier applies to.
What counts as overtime?
Overtime is time worked past a statutory or contractual limit. That limit is defined differently around the world: some jurisdictions count hours over a daily cap, others over a weekly one, and many use both. Rest days and public holidays are frequently treated as premium time at an even higher rate. Because the threshold and the premium are set by local labour law and by the employment contract, the first step is always to confirm which rules apply to the employee in front of you.
The standard formula
Once you know the threshold, the calculation follows one pattern:
Overtime pay = regular hourly rate × overtime multiplier × overtime hours worked.
The multiplier is the premium. A common figure is 1.5× (“time and a half”) for ordinary overtime, and 2× (“double time”) for rest days or holidays in many systems. The exact multipliers, and when each applies, are set by jurisdiction — treat the numbers here as typical examples, not universal law.
How to find the “regular rate”
This is where most errors happen. The regular rate is not always just the base wage. For an hourly worker it is usually the hourly rate itself. For a salaried worker you have to derive an hourly equivalent, and in many jurisdictions the regular rate must also include certain fixed allowances and non-discretionary bonuses, not base pay alone.
- Hourly staff: the regular rate is the contractual hourly wage.
- Salaried staff: divide the pay for the period by the normal hours in that period — for example, monthly salary ÷ normal working days ÷ normal daily hours.
- Extras: check whether local rules require regular allowances or guaranteed bonuses to be folded into the rate before the multiplier is applied.
A worked example
Say an employee earns 20 per hour and works 5 overtime hours at a 1.5× multiplier:
- Regular rate: 20
- Overtime rate: 20 × 1.5 = 30 per hour
- Overtime pay: 30 × 5 = 150 for those five hours
For a salaried worker, convert to an hourly rate first. If someone earns 8,000 per month and normally works 22 days of 8 hours (176 hours), their regular rate is 8,000 ÷ 176 ≈ 45.45. Five overtime hours at 1.5× would be 45.45 × 1.5 × 5 ≈ 341. The method is identical — only the starting rate changes.
Salaried vs hourly
Hourly employees are the simple case: the rate is already known. Salaried employees need the conversion step, and you should be consistent about the divisor you use, because a different assumption about “normal hours” changes every overtime figure. Some roles may be exempt from overtime entirely under local law — senior managers, for example — so confirm eligibility before you calculate anything.
Common pitfalls
- Using base pay instead of the full regular rate when local rules require allowances to be included.
- Mixing daily and weekly thresholds, or applying the wrong multiplier to rest days and holidays.
- Inconsistent hour divisors for salaried staff from one month to the next.
- Forgetting exemptions and paying — or not paying — overtime to the wrong category of worker.
- Manual spreadsheets that drift out of step with the current law.
A note on local rules
Overtime thresholds, multipliers, and rest-day premiums are set by each country’s labour law and vary widely. In the GCC and Saudi Arabia, for instance, labour regulations set specific overtime and rest-day rules that differ from those elsewhere — so always work from the statute and contract that actually govern the employee, rather than a figure you read online. When in doubt, check the local regulation or take professional advice.
Because the rate definitions, thresholds, and premiums change by jurisdiction and by contract, overtime is one of the most error-prone parts of payroll to run by hand. FulcrumGrid HR Suite captures hours worked and calculates overtime and payroll together against the rules you configure, so the premium is applied consistently and every payslip is easy to explain.
Frequently asked questions
What is the standard overtime formula?
Overtime pay = regular hourly rate × overtime multiplier × overtime hours worked. The multiplier is commonly 1.5× for ordinary overtime, and often 2× for rest days or holidays, but the exact figures are set by local law and the contract.
What is the “regular rate” and why does it matter?
The regular rate is the hourly figure the multiplier is applied to. It is not always just base pay: many jurisdictions require fixed allowances and non-discretionary bonuses to be included, so using base pay alone can under- or overpay overtime.
How do you calculate overtime for a salaried employee?
Convert the salary to an hourly equivalent first, for example monthly salary divided by normal working days and then by normal daily hours, then apply the overtime formula. Be consistent about the divisor, because it changes every overtime amount.
Are overtime rules the same in every country?
No. Thresholds, multipliers, and rest-day premiums vary widely by country and jurisdiction, and some roles are exempt entirely. In the GCC and Saudi Arabia, for instance, labour rules set their own overtime and rest-day terms, so always work from the law and contract that govern the employee.
FulcrumGrid HR Suite
Let payroll do the overtime math
FulcrumGrid HR Suite captures hours worked and calculates overtime and payroll together against your rules, so every premium is applied consistently and every payslip is easy to explain.