LIN registration means obtaining a Labour Identification Number, a unique number allotted to an establishment on the Ministry of Labour and Employment's Shram Suvidha portal so that its labour-law filings, inspections and returns can be tracked under one identity. If you run a factory, shop, contractor firm or any establishment covered by central labour laws, you will meet this number in registrations, returns and principal employer filings. This page explains what LIN is, how it fits with the Labour Codes that came into force on 21 November 2025, and what you should do now.
What is a Labour Identification Number (LIN)?
The Labour Identification Number was introduced as part of the Shram Suvidha initiative, a single online window through which employers register, file returns and receive inspection communication. Instead of each labour office keeping its own record of your establishment, the portal gives you one identity number that follows you across filings.
In practice, the LIN has been quoted in applications for contract labour licences, in principal employer returns, in provident fund and ESIC related filings on the integrated labour portal, and in the details of contractors engaged by you. Auditors and labour officers use it to confirm that a contractor or establishment is a real, registered entity.
The legal frame has changed. The four Labour Codes came into force on 21 November 2025, and the OSH (Central) Rules, 2026 provide that establishment registration is done in Form-I on Shram Suvidha, with a certificate in Form-III. The Rules also require existing registrants under the older central labour laws to update their particulars. Whether the new registration number issued under Form-I replaces or sits beside the older LIN was not confirmed from an official source, so we advise treating the Shram Suvidha registration as the single source of truth and quoting whatever number your portal profile shows.
In short, think of LIN as the portal identity of your establishment. The real compliance burden is the registration, the accuracy of the details behind it, and the returns you file against it.
Who needs a LIN or Shram Suvidha registration?
Establishments in the central sphere, and many employers who deal with central labour authorities, are expected to be on the portal. Whether your establishment falls in the central or the state sphere depends on the appropriate government for your industry.
- Establishments that must register under the OSH Code, as set out in the Central Rules for central sphere industries
- Contractors and principal employers working with contract labour, where contractor details feed into annual returns
- Employers who earlier held registrations or licences under the central labour laws now subsumed in the Labour Codes
- Factories, mines, ports, railways, banking, insurance and similar sectors where the central government is the appropriate government
- Companies with units in several states that want a single registration and single return under the code framework
- Employers whose clients, tenders or audits ask for a valid LIN or Shram Suvidha registration proof
Benefits of Labour Identification Number (LIN)
One identity for labour compliance
A single number ties your registration, returns and inspection history together, which reduces duplicate paperwork across offices.
Faster contractor verification
Principal employers can record contractor details, including the LIN, in annual returns, which makes vendor due diligence cleaner.
Online, paperless handling
Application, certificate download and updates are done on the portal, so you can manage them without visiting a labour office for routine steps.
Alignment with the Labour Codes
The Central Rules contemplate single registration, a PAN-India licence and a single return, so a clean portal profile prepares you for that model.
Audit and tender readiness
Having registration proof and a visible number on HR documents and registers answers common questions from clients, auditors and labour inspectors.
Eligibility and applicability
Any employer or establishment covered by the relevant labour law can register. The threshold questions are about sphere and size, not about your constitution.
- Any proprietorship, partnership, LLP, company, trust or society that employs workers in an establishment covered by the Code
- The establishment must have an identifiable address, an authorised signatory and a valid PAN
- Applicability thresholds, such as the number of workers, differ by Code and by the type of registration or licence, so check the Rules for your activity
- Contractors are registered or licensed separately, and their LIN or registration details are captured by the principal employer
- Existing registrants under earlier central labour laws should update particulars within the window specified by the Rules, which commentators report as 8 November 2026
Documents required
Entity documents
- PAN of the entity
- Certificate of incorporation, LLP agreement, partnership deed or proprietor proof, as applicable
- GST registration, if available
- Identity and address proof of the authorised signatory
- Authorisation letter or board resolution for the signatory
Establishment details
- Registered and establishment address with pin code and district
- Nature of work, industry code and date of commencement
- Details of the employer, manager, directors or partners
- Number of employees and, where relevant, contract workers by category
- Details of principal employer and contract, if you are a contractor
Technical requirements
- Mobile number and email linked to the signatory for OTP
- Digital signature certificate if the portal flow requires it for your role (see digital signature certificate)
- Existing registration or licence numbers under earlier laws, if you are updating
Step-by-step process
The portal screens change from time to time, so the exact menu names may differ, but the sequence below reflects how we handle these filings.
Check central or state sphere
Confirm who the appropriate government is for your activity. This decides whether you use the central portal flow or a state system.
Create or recover the user profile
Register on Shram Suvidha with a valid mobile and email. If your establishment already has a profile from earlier laws, recover it instead of creating a duplicate.
Fill establishment details
Enter entity name, PAN, address, nature of business, employer and manager details and workforce numbers. Keep spellings identical to your PAN and incorporation records.
Upload documents
Attach entity proof, address proof and the authorisation. Scan clearly and keep file sizes within portal limits.
Submit Form-I and track status
Submit the registration application and monitor the dashboard for objections. Under the 2026 Central Rules, the certificate is to follow within 7 days or the registration is deemed granted.
Download certificate and note the number
Download the Form-III certificate, note the number shown on your profile, and circulate it to HR, accounts and contractors.
Update existing registrations
If you were registered under older laws, update particulars in Form-I within the period the Rules allow and map any contractor details.
Government fees
We did not find a published fee for LIN allotment itself in the sources we reviewed. Fees under the Labour Codes depend on the specific registration or licence, such as contract labour or factory licensing, and on the Central or State Rules.
Professional charges are quoted separately after reviewing your case. Government fees are paid directly to the authority.
How long does it take?
The Central Rules provide that a Form-III certificate is issued within 7 days of a Form-I application, and if not issued within that time the registration is deemed granted. Actual time depends on how cleanly your application is filled and whether the office raises a query.
| Stage | Typical time |
|---|---|
| Profile creation and data preparation | Usually a day or two once documents are ready |
| Application review and certificate | Within 7 days as per the 2026 Central Rules, subject to queries |
| Updating legacy particulars | Must be completed within the window set by the Rules |
Validity and updates
We did not find a fixed expiry for a LIN or Form-III registration in the sources reviewed. What matters is that the details remain accurate. Changes in address, ownership, nature of work or employer must be updated on the portal, and the registration number must appear on HR documents, registers and correspondence. If you hold older registrations, the Rules reportedly require you to update their particulars by 8 November 2026, so do not leave it until the last week.
Compliance after registration
- Display the registration certificate and quote the number on registers, appointment letters and correspondence
- File the annual return on the portal; a principal employer's return captures contractor details including LIN
- Intimate contract work orders on the portal within the time set by the Rules (reported as 15 days)
- Update changes in address, management or workforce promptly
- Maintain registers and records as required under the OSH Code and the Rules
- Track related registrations such as PF registration and ESIC registration
Common mistakes and rejection reasons
Duplicate profiles
Creating a fresh profile when the establishment already exists leads to two numbers for one entity and confusion in returns.
Mismatch with PAN or incorporation data
Name or address spelled differently from PAN and the certificate of incorporation invites queries.
Wrong sphere
Filing on the central portal for an establishment that falls under the state government, or the reverse, causes delay.
Contractor details missing
Principal employers who forget to capture contractor registration details face gaps in the annual return.
Ignoring the update deadline
Existing registrants who skip the update under the new Rules risk their records being treated as non-compliant.
Stale contact details
OTP and notices go to the old mobile or email, so objections are missed.
Penalties for non-compliance
Penalties for operating without a required registration, or for failing to file returns, are set in the relevant Labour Code and Rules. We did not verify specific penalty amounts for this page, so we do not state any. Under the OSH Code, non-compliance can attract penalties and, in serious cases, prosecution, and inspectors can raise queries on records during inspection. Get your case reviewed against the current Code text before you rely on any figure quoted by a third party.
Practitioner tips
- Search for an existing profile using PAN and mobile before creating a new one; duplicate profiles are the most common cleanup job we see.
- Keep one person as the signatory on record and update the mobile number the day that person changes.
- Collect the LIN or registration number of every contractor at the time of work order, not at the return stage.
- Print the certificate and the portal dashboard status page in your compliance file; labour officers and clients usually ask for both.
- Do not rely on third-party websites for rules; read the Central Rules text for your category before declaring workforce numbers.
How Lawgical Guru helps
Sphere and applicability check
We check whether your establishment falls under central or state rules and which Code provisions apply.
Profile recovery and de-duplication
We look for existing profiles or old registrations before filing anything new.
Application preparation and filing
We prepare the Form-I data, review documents for consistency and file on the portal.
Query handling
If the office raises a query, we draft and upload the reply.
Contractor and return mapping
We help principal employers capture contractor details for their annual return.
Update reminders
We track the update window for existing registrants so you do not miss it.
Labour Identification Number (LIN): frequently asked questions
What is a Labour Identification Number (LIN)?
LIN is a unique number allotted to an establishment on the Ministry of Labour and Employment's Shram Suvidha portal. It identifies the establishment across registrations, returns and inspections, and is quoted by principal employers when they record contractor details in their annual return.
How do I get a LIN number?
You register your establishment on the Shram Suvidha portal by creating a profile, filling in entity, address and workforce details, uploading documents and submitting the application. Under the OSH Central Rules 2026 this registration is in Form-I and the certificate is in Form-III.
Is LIN registration still required after the Labour Codes?
The Labour Codes came into force on 21 November 2025 and the central rules require registration on Shram Suvidha. Whether the older LIN continues alongside the new number was not confirmed from an official source, so use the number shown on your portal profile and check current instructions.
Is there a fee for LIN registration?
We did not find a published fee for LIN allotment in the sources reviewed. Fees for specific licences under the Labour Codes, such as contract labour or factory licences, are set by the Rules and vary. Check the portal for the screen you are using.
How long does it take to get registered?
The 2026 Central Rules say the Form-III certificate is to be issued within 7 days of a Form-I application, and if it is not, the registration is deemed granted. Queries from the office can extend the process, so accurate data matters.
I already have a LIN. Do I need to do anything?
Existing registrants under earlier central labour laws are reported to need to update their particulars in Form-I within the period set by the Rules, which commentators place at 8 November 2026. Log in, review your details and update them.
How can a contractor use a LIN?
A contractor's registration or LIN is captured by the principal employer in its annual return, and contract work orders are intimated on the portal within the time set by the Rules. Contractors also need their own licence where the law requires one, see contract labour licence.
Can I check someone else's LIN?
Principal employers commonly verify contractor registration details through the portal or by asking for the certificate. The exact public search facility available on Shram Suvidha changes, so ask the contractor for the certificate and confirm it against the portal.
Who signs the application?
An authorised signatory such as a director, partner or proprietor, or a person holding a written authorisation, signs through the portal login and OTP. Some roles may need a digital signature, so keep a valid certificate ready.
Reviewed by Satyam Gupta, Company Secretary (CS) & Advocate
8+ years of industry experience. This page was last reviewed on 16 October 2026 against the official sources below. Rules and fees change — confirm on the official portal before you apply.