Choose the correct overtime supplement — 50 % is most common, while 100 % often applies to Sundays, public holidays and night work.
How overtime pay is calculated
The calculator adds the overtime supplement on top of the ordinary hourly rate for those hours:
Overtime pay = Hourly rate × Number of hours × (1 + Supplement ÷ 100)
If you work 8 overtime hours at an hourly rate of 280 kr with a 50 % supplement, you get 280 × 8 × 1.5 = 3,360 kr total for those hours.
Note: Overtime supplement rules can vary between collective agreements and employment contracts. Norway's Working Environment Act requires at least a 40 % supplement, but many agreements give a higher rate. Check your own agreement for the correct rate — this calculator applies to Norwegian employment law only.
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Frequently asked questions
What's the minimum overtime supplement required in Norway?
The Working Environment Act requires at least a 40 % supplement for overtime work. Many collective agreements and companies give higher rates, often 50 % on weekdays and 100 % on Sundays, public holidays and night work.
How do I find my hourly rate if I have a fixed monthly salary?
Use the net salary calculator, or calculate monthly salary × 12 ÷ (agreed annual hours, often around 1,950 hours at a 37.5-hour week) to find an approximate hourly rate.
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