Tamil Nadu Labour Law Compliance Guide for Employers, 2026 Edition

India's four new Labour Codes, the Code on Wages, the Industrial Relations Code, the Code on Social Security, and the Occupational Safety, Health & Working Conditions (OSH) Code, came into force on 21 November 2025, consolidating 29 central labour laws into four.

Here is what this means for Tamil Nadu employers:

• The Codes now sit above many existing Tamil Nadu state laws. Several state acts, including Shops & Establishments, Professional Tax administration, and the Labour Welfare Fund, continue to operate, but increasingly within the framework of the Codes.
• "Wages" is now defined uniformly: basic pay plus dearness allowance plus retaining allowance must add up to at least 50% of total remuneration, which changes PF, gratuity, and bonus calculations for most salary structures.
• Appointment letters are now mandatory for every employee.

A couple of practical notes: state rules under the four Codes are notified state by state, so what has changed in Tamil Nadu will not always match what has changed elsewhere. For a worked example of what notified state rules actually change, see Niyuk's Karnataka Labour Law Compliance Guide. And if running payroll and attendance registers in-house isn't the best use of your team's time, a cloud HRMS with an attendance module can keep these records current automatically.

This guide is current as of June 2026. Labour Code rules are still evolving, and Niyuk updates these guides as new notifications are issued.

1. Professional Tax in Tamil Nadu (Greater Chennai Corporation Rates)

Professional Tax in Tamil Nadu is levied by the local body, not the state, so there is no single state-wide rate. The slabs below are the Greater Chennai Corporation's. If your establishment is outside Chennai, confirm the rates with your own municipal corporation, municipality, or town panchayat before you deduct, since they differ.

Key points:

• Maximum annual PT is ₹2,500 per employee.
• Filing is half-yearly, unlike most states, where it's monthly.
• Due dates: 30 September (for April to September) and 31 March (for October to March).

2. Tamil Nadu Labour Welfare Fund (TNLWF)

• Employee contribution: ₹20 a year (₹10 per half-year).
• Employer contribution: ₹40 a year per employee (₹20 per half-year).
• Due dates: January and July, under the Unpaid Accumulation Fund.

3. Tamil Nadu Shops and Establishments Act, 1947

• Registration: within 30 days of commencement.
• Working hours: maximum 8 hours a day, 48 hours a week.
• Overtime: paid at twice the ordinary rate of wages.
• Weekly holiday: mandatory.
• Leave: as per the Tamil Nadu Shops Act's leave provisions.
• IT/ITES exemptions: available on working hours.

4. Central Laws Applicable in Tamil Nadu

• EPF: 12% employer plus 12% employee.
• ESIC: 3.25% employer plus 0.75% employee, for eligible employees.
• Payment of Bonus: 8.33% to 20%.
• Payment of Gratuity: payable after 5 years of continuous service.
• Minimum Wages: Tamil Nadu's zone-wise rates.

• Automotive: Chennai (the "Detroit of India"), Sriperumbudur, and Oragadam.
• IT and software: the OMR IT Corridor, Tidel Park, and SIPCOT IT Park.
• Manufacturing: the Ambattur, Guindy, and Hosur industrial areas.
• Textiles: the Coimbatore and Tirupur textile clusters.
• Healthcare: Chennai's medical tourism corridor.

How often is PT filed in Tamil Nadu?

Unlike most states, Tamil Nadu Professional Tax is filed half-yearly, by 30 September (for the April to September period) and 31 March (for the October to March period). This half-yearly cadence is unique to Tamil Nadu's PT structure.

What are the TNLWF contribution rates?

The Tamil Nadu Labour Welfare Fund requires ₹40 a year per employee from the employer and ₹20 a year from the employee, paid in two half-yearly instalments.

Do Chennai IT companies get compliance exemptions?

Tamil Nadu provides working-hour and night-shift exemptions for IT/ITES companies. All statutory contributions, PF, ESIC, PT, and TDS, remain mandatory regardless.

What is the minimum wage in Tamil Nadu?

Tamil Nadu's minimum wages vary by industry and zone, with the Chennai zone carrying the highest rates. The state government issues notifications for different scheduled employments.

How does Niyuk handle Tamil Nadu compliance?

Niyuk manages Tamil Nadu's half-yearly PT filing, TNLWF contributions, Shops Act compliance, and all central law filings, applying Tamil Nadu's specific rules automatically.