One Unit One Identifier: Your LIN Compliance Window is Open Until November

The final Central Rules under the new Labour Codes were notified on May 8, 2026. This triggered a six-month transition period for existing establishments to update their registration details on the Shram Suvidha Portal. The deadline to link your old employer codes (EPFO, ESIC, CLRA, etc.) to your Labour Identification Number (LIN) is November 9, 2026.

The transition to the “One Unit One Identifier” framework is a legal requirement under the OSH Code, 2020, and the Code on Social Security, 2020. Section 3(1) of the OSH Code mandates registration for every establishment. Section 3(8) provides that establishments already registered under any central labour law are deemed registered under the new Code, subject to furnishing details within the prescribed time. The LIN is designed to be a single, unified identifier for your establishment across all central labour laws, eventually replacing your separate EPFO, ESIC, and DGMS codes. The government’s goal is to streamline compliance, and the LIN is the key to filing unified returns on the Shram Suvidha Portal.

The Mandate and the Transition Period

The law is clear. Section 3(8) of the OSH Code provides that establishments already registered under any central labour law are deemed registered under the new Code. However, this deemed registration is conditional. The establishment must provide its details to the registering officer within the prescribed time and form. The Central Rules specify this as a six-month window from the date the rules came into force. For new establishments, the window for registration is even shorter: they must apply within 60 days of being established.

If your company has not yet verified its LIN and linked its EPFO, ESIC, CLRA, or DGMS registrations, you are operating in a pre-compliance state as the system shifts.

The Current Reality for Employers

The government’s warning on the DGMS portal was clear: verify the information associated with your LIN before the current employer codes are rendered useless. The transition period is the window to act before old codes lose relevance.

Here is what happens if you miss the deadline:

  1. Old Codes are Losing Relevance: The government has stated its plan to do away with all employer codes issued by separate labour enforcement agencies such as ESIC, EPFO, and DGMS and replace them with the LIN. The six-month window is the transition period. Employers relying solely on old codes will be non-compliant once the transition period ends.
  2. Data Mismatch and Automated Flags: The Shram Suvidha Portal gives a single, unified view of your compliance. It automatically matches your PAN, GSTIN, employee count, and wage details. If your establishment is not correctly linked to a LIN, your data will show up as unlinked in the system. This mismatch triggers automatic alerts, which can lead to inspections and enforcement action.
  3. Unified Returns Become Impossible: The LIN is required to file unified returns on the Shram Suvidha Portal. Without a properly linked LIN, you will have to continue with the old system of filing separate returns for each law. The government’s aim is to reduce compliance burden through one single electronic return. You cannot avail this benefit without an active and linked LIN.
  4. State-Level Complications: The LIN is primarily for central compliance. State-level registrations like Shops & Establishments and Professional Tax remain separate. However, some states are integrating the LIN into their own frameworks. While LIN is primarily for central compliance, states like Chhattisgarh have mandated LIN under their Shops & Establishments Act, creating dual compliance obligations. Operating without a LIN is creating friction not just at the central level, but also at the state level.

The Linking Process: Step-by-Step

The process to link your LIN involves multiple steps. You should complete this process well before the November 9 deadline.

  1. Find Your LIN: Use the “Know Your LIN” feature on the Shram Suvidha Portal to search for your establishment’s LIN using your EPFO code, ESIC number, PAN, or establishment name.
  2. Create a Portal Account: If you don’t already have one, sign up on the Shram Suvidha Portal (shramsuvidha.gov.in) using a valid email ID and mobile number.
  3. Link the Establishment: After logging in, select the “Link Establishment” option from the left-hand menu. You will need your LIN number and, if you are not the original representative, either provide the previous representative’s contact details or generate an authorization letter to meet with the regional head.
  4. Verify the Data: Once linked, use the “Verify Data” option to check that your establishment’s legal name, address, nature of activity, employee count, and responsible person details are correct. Any inaccuracies here could lead to future compliance issues.

Penalty Framework

The OSH Code, Chapter XIII, prescribes penalties for contravention of its provisions, including failure to register. General violations may attract fines up to ₹2 lakh for first offences, with higher penalties for repeat offences. Certain serious contraventions can attract fines up to ₹5,00,000 or imprisonment up to 2 years . The Social Security Code, Sections 125-128, provides for assessment and recovery of contribution dues where an employer defaults on payment obligations, including interest at 12% per annum and damages up to the amount of arrears. The government has emphasized that the transition is not optional.

The Bottom Line

The deadline is November 9, 2026. You have time to act, but the clock is ticking. Here is what you need to do now.

  1. Conduct an Immediate LIN Audit: Use the “Know Your LIN” feature on the Shram Suvidha Portal to check if a LIN exists for your establishment. If it does, find out who is the current representative and ensure they are authorised to act.
  2. Initiate the Linking Process: If your LIN is not linked to your portal account, follow the “Link Establishment” process. This is your most urgent task. Do not assume your old representative has done this. You need to actively verify and link the data.
  3. Rectify Data Mismatches: Once linked, verify the data associated with your LIN. Check that your legal name, address, nature of activity, employee count, and responsible person details are accurate. Any mismatch in your legal name, address, or nature of activity will create issues in future filings and inspections.
  4. Align with State Rules: Check if your state has integrated the LIN with its own regulations. In Chhattisgarh, for example, the LIN is now mandatory for establishments with 10 or more employees under the Shop and Establishment Act. Ensure you are complying with both central and state-level requirements.

DISCLAIMER: This content is for educational and informational purposes only, based on available Central and State notifications as of August 2026. It is not formal legal counsel. Please consult a qualified lawyer for advice tailored to your establishment’s specific operations.