Sri Lanka OT Calculator | Salary & Overtime Calculation – Shop & Office Employees Act

Use our Sri Lanka OT Calculator to calculate overtime and holiday pay accurately based on the Shop & Office Employees Act and Department of Labour guidelines. Simple, legal, and reliable salary calculations.

Official Explanation – How This Sri Lanka OT Calculator Works

This Sri Lanka OT Calculator is designed according to the Department of Labour Sri Lanka guidelines and the Shop & Office Employees Act.

It helps employees and employers calculate overtime (OT) payment and holiday payment correctly using basic salary.

The calculator follows commonly accepted salary calculation practices used in Sri Lanka for shop, office, and private sector employees.

What Is Considered Salary and Remuneration in Sri Lanka

Under the Shop & Office Employees Act, remuneration means salary or wages and includes:

• Monthly basic salary or wages
• Allowances such as cost of living allowance
• Overtime payment
• Prescribed allowances under labour laws

This calculator uses the basic salary as the base value, which is the standard practice for OT calculation in Sri Lanka.

How Overtime (OT) Is Calculated Using This Calculator

According to Sri Lanka labour practices, overtime means work done beyond normal working hours.

OT Calculation Method Used

This Sri Lanka OT Calculator applies:

• 1.5 times payment for every 1 OT hour
• OT is calculated based on hourly rate
• Hourly rate differs by staff category

Hourly Rate Formula

• • Executive Staff
    Basic Salary ÷ 240

• • Minor / Non-Executive Staff
    Basic Salary ÷ 200

OT Payment Formula

OT Pay = Hourly Rate × 1.5 × OT Hours

This method is widely used in Sri Lanka salary systems and aligns with Department of Labour interpretations.

Holiday Pay Calculation Explained

This calculator also includes holiday work payment.

Holiday Pay Rule Used

• 1 holiday day = 1 full day salary
• No different holiday types are applied
• Daily salary is calculated as:

Daily Salary = Basic Salary ÷ 20
Holiday Pay = Daily Salary × Holiday Days Worked

This matches the “full remuneration” concept defined under the Shop & Office Employees Act, where employees are entitled to full salary for approved holidays.

Legal Background – Shop & Office Employees Act (Sri Lanka)

The Shop & Office Employees Act No. 19 of 1954 governs working hours, overtime, leave, and holidays for employees working in:

• Shops (retail, wholesale, hotels, salons, food outlets, etc.)
• Offices (banks, insurance companies, shipping companies, agencies, clerical departments, etc.)

Key Legal Definitions Covered

• Overtime: Work beyond normal working hours
• Remuneration: Salary, allowances, and overtime payments
• Full Remuneration: Full salary paid for holidays or leave

This Sri Lanka OT Calculator follows these principles in a simplified and practical way.

Weekly Holidays, Leave & Public Holidays (Important Note)

According to Sri Lanka labour law:

• Employees are entitled to weekly holidays with full remuneration
• Annual leave, casual leave, Poya days, and public holidays are protected by law
• Holiday salary must be paid at the normal daily rate

⚠️ This calculator only calculates OT and holiday work payment.
Leave entitlements are explained here for legal awareness, not for calculation.

Budgetary Relief Allowance Notice

Under:

• Budgetary Relief Allowance Act No. 36 of 2005
• Budgetary Relief Allowance Act No. 04 of 2016

Private sector employees are entitled to a Rs. 3,500 allowance.

📌 This allowance is not included in OT calculation unless specifically stated by the employer.

Wages Board Ordinance – Important Disclaimer

Some industries in Sri Lanka fall under the Wages Board Ordinance, which may have:

• Different minimum wages
• Different OT calculation methods
• Industry-specific working hours

This calculator is not a replacement for Wages Board decisions.
For such trades, always refer to the relevant Gazette notification.

Disclaimer

This Sri Lanka OT Calculator is provided for general guidance and estimation purposes only.
Final salary and overtime payments depend on:

• Employer policy
• Applicable labour law
• Wages Board decisions (if applicable)

For legal disputes, always consult the Department of Labour Sri Lanka.