Overtime Night Holiday Pay Calculator

Overtime Night Holiday Pay Calculator helps estimate wage, overtime, allowance, arrears, or pay-period scenarios in English.

Pay inputs

Uses the Korean overtime, night, and holiday pay library.

Ordinary hourly wage

₩15,311

Monthly allowance

₩588,172

Monthly gross pay

₩3,788,172

Base pay plus premiums

Monthly net estimate

₩2,932,279

Premium breakdown

Overtime premium

₩61,244

8h, premium 50%

Night premium

₩15,311

2h, premium 50%

Holiday premium within 8h

₩61,244

8h, premium 50%

Overtime plus night premium

₩30,622

2h, premium 100%

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Korea overtime, night, and holiday pay calculator guide

This English page translates the Korean overtime-night-holiday pay calculator and calls calculateOvertimePay from the employment feature library. It keeps ordinary hourly wage conversion, Labor Standards Act Article 56 premium rates, weekly-hour checks, minimum-wage checks, and payroll deductions.

Ordinary hourly wage and premium structure

The Korean calculator first converts the entered hourly, monthly, or annual wage into ordinary hourly wage. Monthly wage is divided by the monthly conversion hours used by the Korean source, while annual wage is divided by 12 and then by the same monthly standard. This prevents the English page from using a generic percentage model.

The allowance items are separated into overtime, night, holiday within 8 hours, holiday over 8 hours, overtime-night overlap, holiday-night overlap, and holiday overtime-night overlap. Each line stores hours, base amount, premium amount, total amount, and legal basis.

Article 56 and small-workplace treatment

For workplaces with 5 or more employees, the model applies Korean premium logic for overtime, night work from 22:00 to 06:00, and holiday work. Overlapping work is not counted twice as plain hours; the Korean function splits pure overtime, pure night work, holiday base hours, holiday overtime hours, and overlap hours before calculating premiums.

For workplaces with fewer than 5 employees, the Korean source limits premium treatment differently and keeps under-5 notes in the result. The English UI exposes the business-size switch so that the same legal branch is used instead of forcing every worker into the Article 56 premium path.

52-hour and minimum-wage checks

The weekly-hours check preserves the Korean 40-hour regular plus overtime structure and compares total weekly hours with the 52-hour ceiling. The result reports whether the entered overtime exceeds the modeled maximum and how many excess hours appear.

The minimum-wage check compares calculated ordinary hourly wage with the Korean source constant for the 2026 minimum wage. Shortfall per hour and monthly shortfall are calculated from the same library output, so the English page stays numerically aligned with the Korean page.

Net pay estimate

The output does not stop at gross allowance. It adds monthly base pay, monthly allowance, gross monthly pay, annualized gross pay, and payroll deductions for National Pension, Health Insurance, long-term care, employment insurance, income tax, and local income tax.

Actual payroll can differ when an employment contract has fixed overtime pay, excluded ordinary-wage items, collective agreements, or special working-hour systems. The calculator is meant to reproduce the Korean page calculation for planning and comparison before checking payroll records.