★ Why this topic matters for UPSC One of the most tested laws in GS-II (governance/social justice) and GS-III (labour reforms, economy).Prelims frequently tests definitions (industry, workman, industrial dispute), thresholds and landmark cases.Mains asks about the transition from the four labour codes and the trade-off between worker protection and ease of doing business.

1. Quick Facts on the Industrial Disputes Act, 1947

Attribute	Detail
Enacted	11 March 1947; came into force 1 April 1947
Extent	Whole of India
Type of law	Central legislation (Concurrent List – Entry 22, List III)
Successor law	Industrial Relations Code, 2020 (in force from 21 November 2025)
Nodal ministry	Ministry of Labour and Employment
Core purpose	Investigation and settlement of industrial disputes
Key definitions	Industry [2(j)], Workman [2(s)], Industrial Dispute [2(k)], Strike [2(q)], Lockout [2(l)], Retrenchment [2(oo)], Lay-off [2(kkk)]

2. What the Industrial Disputes Act, 1947 Was Designed To Do

The Act was enacted in the backdrop of post-War industrial unrest to provide a permanent, statutory machinery for peaceful resolution of conflicts between capital and labour. Its objectives are:

• Investigation & settlement – Provide a structured mechanism (works committees, conciliation, adjudication) for prevention and settlement of industrial disputes.
• Industrial peace – Prevent illegal strikes and lockouts, and regulate legal ones through notice and cooling-off requirements.
• Worker protection – Provide compensation to workers for lay-off, retrenchment and closure, so that the burden of business fluctuations is not borne by labour alone.
• Codify worker rights – Statutorily recognise concepts like continuous service, unfair labour practices and victimisation to protect workmen from arbitrary employer action.
• Economic development – Ensure a stable industrial climate necessary for post-Independence economic planning and growth.

3. The Five-Tier Dispute Resolution Machinery

The Act sets up a graded, five-tier machinery moving from voluntary/bipartite mechanisms to compulsory adjudication:

1	Works Committee (Section 3) Mandatory in establishments with 100+ workmen (in the preceding 12 months); equal representation of employer & workmen; aims to promote amity and resolve minor day-to-day frictions before they escalate.
2	Conciliation Officer (Section 4) Appointed by appropriate government for a specified area/industry; mediates and promotes settlement; duty is mandatory in disputes relating to public utility services.
3	Board of Conciliation (Section 5) An ad hoc body constituted for a specific dispute; used where a dispute is of a complex or wider nature than a single conciliation officer can handle.
4	Court of Inquiry (Section 6) Constituted to inquire into any matter connected with or relevant to an industrial dispute; not an adjudicatory body – only submits a fact-finding report within 6 months.
5	Labour Court / Industrial Tribunal / National Tribunal (Sections 7, 7A, 7B) The adjudicatory wing. Labour Courts decide matters in the Second Schedule (e.g. legality of an order, discharge/dismissal); Industrial Tribunals decide Second & Third Schedule matters (e.g. wages, bonus, retrenchment); National Tribunals are constituted by the Centre for disputes of national importance affecting more than one State.

★ Exam Alert Only the Labour Court/Tribunal/National Tribunal tier is adjudicatory (binding award); Works Committee, Conciliation Officer, Board of Conciliation and Court of Inquiry are all non-adjudicatory/facilitative.A Court of Inquiry submits a report, not an award or verdict.

4. Definition of “Industrial Dispute” Under Section 2(k)

Section 2(k) defines an industrial dispute as “any dispute or difference between employers and employers, or between employers and workmen, or between workmen and workmen, which is connected with the employment or non-employment or the terms of employment or with the conditions of labour, of any person.”

• Three categories of parties recognised – Employer–Employer, Employer–Workmen, and Workmen–Workmen.
• Scope – The dispute must relate to employment/non-employment, terms of employment, or conditions of labour – courts have read in a requirement that the workman raising the dispute (or on whose behalf it is raised) must have a direct or substantial interest in it (community of interest test, laid down in Workmen of Dimakuchi Tea Estate v. Management, 1958).
• Individual vs. collective – An individual dispute is ordinarily not an ‘industrial dispute’ unless it is sponsored/espoused by a union or a substantial number of workmen – though Section 2A creates a statutory exception, deeming disputes relating to an individual workman’s discharge, dismissal, retrenchment or termination to be an industrial dispute even without union support.

5. Strikes and Lockouts: The Right and Its Limits

Aspect	Strike [Section 2(q)]	Lockout [Section 2(l)]
Initiated by	Workmen	Employer
Meaning	Cessation of work by a body of persons acting in combination, or concerted/common refusal to continue work	Closing of a place of employment, or suspension of work, or refusal by employer to continue to employ workmen
Objective	Press worker demands	Counter-pressure tactic / defensive measure by management

• Public utility services (Section 22) – At least 6 weeks’ notice before striking/locking out; strike must not commence within 14 days of giving notice, before the date of strike specified in the notice, or during the pendency of conciliation proceedings and 7 days after their conclusion.
• General prohibition (Section 23) – Strikes/lockouts are prohibited during the pendency of conciliation proceedings before a Board, arbitration proceedings, or adjudication proceedings before a Labour Court/Tribunal/National Tribunal (and for 2 months after conclusion of proceedings before the latter), and during the operation of a settlement/award in respect of matters covered by it.
• Illegal strikes/lockouts – A strike/lockout that contravenes Section 22 or 23 is illegal (Section 24). Section 25 prohibits financial aid to illegal strikes/lockouts; Sections 26–31 prescribe penalties.
• Section 10(3) power – On referring a dispute for adjudication, the appropriate government may by order prohibit the continuance of any strike/lockout in connection with the dispute.

6. Lay-off: Section 2(kkk) and Sections 25A to 25E

Lay-off means the failure, refusal or inability of an employer to give employment to a workman whose name is on the muster roll, on account of shortage of coal, power or raw materials, accumulation of stocks, breakdown of machinery, natural calamity, or any other connected reason [Section 2(kkk)].

• Applicability – Chapter VA (Sections 25A–25E) applies to non-seasonal industrial establishments employing 50 or more workmen (but excludes establishments covered by Chapter VB, i.e., 100 or more workmen, where prior government permission is additionally required under Section 25M).
• Compensation (Section 25C) – A laid-off workman (other than a badli/casual workman) is entitled to compensation equal to 50% of the total of basic wages and dearness allowance for the period of lay-off, subject to a ceiling of 45 days in a year in most cases.
• Eligibility – A workman must have completed at least one year of continuous service to claim lay-off compensation (Section 25B defines ‘continuous service’, including deemed continuous service based on days actually worked).
• Establishments with 100+ workmen – Chapter VB (Sections 25K–25S) mandates prior permission of the appropriate government before laying off workmen in establishments employing 100 or more workmen (raised to 300 under many State amendments and under the Industrial Relations Code, 2020).

7. Retrenchment: Section 25F and the “Last Come, First Go” Rule

Retrenchment [Section 2(oo)] means the termination of a workman’s service by the employer for any reason whatsoever, other than as a punishment by way of disciplinary action. It excludes voluntary retirement, retirement on reaching the age of superannuation, non-renewal of a contract on its expiry, and termination on grounds of continued ill-health.

Conditions precedent to retrenchment – Section 25F

• One month’s written notice (or wages in lieu of notice) stating the reasons for retrenchment.
• Retrenchment compensation at 15 days’ average pay for every completed year of continuous service (or any part thereof in excess of six months).
• Notice served on the appropriate government (or prescribed authority) in the prescribed manner.

Section 25G – “Last come, first go”

In the absence of any agreement between employer and workman, the employer must ordinarily retrench the workman who was the last person employed in that particular category, unless the employer records reasons for retrenching any other workman. This is a procedural safeguard against arbitrary/discriminatory retrenchment.

• Section 25H – Re-employment – Section 25H requires the employer to give retrenched workmen an opportunity of re-employment in preference to other persons, if the employer proposes to take on more workmen.
• Chapter VB overlay – Establishments employing 100 (or, under later amendments/the 2020 Code, 300) or more workmen require prior permission of the appropriate government before retrenching, under Chapter VB (Section 25N).

8. Closure: Section 25-O and Government Permission

Closure refers to the permanent closing down of a place of employment or part thereof.

• Section 25FFA – For establishments not covered by Chapter VB, the employer must serve 60 days’ notice before closure and pay compensation as if the workmen had been retrenched.
• Section 25-O – Establishments employing 100 or more workmen must apply for prior permission of the appropriate government at least 90 days before the intended date of closure; if permission is neither granted nor refused within 60 days, it is deemed to have been granted.
• Excel Wear case – Excel Wear v. Union of India (1978) struck down the original absolute prohibition on closure (introduced by the 1976 amendment) as violative of the fundamental right to close a business under Article 19(1)(g); Parliament responded in 1982 by substituting it with the current permission-based regime under Section 25-O.
• Consequence of illegal closure – If closure takes place without permission (or after refusal), it is deemed illegal and workmen are entitled to full wages; Section 25P allows the government to direct that an undertaking not be closed if closure is not justified.

9. Landmark Judgments Under the Industrial Disputes Act, 1947

Case	Key Holding
D.N. Banerji v. P.R. Mukherjee (1953)	A municipality carrying on activities analogous to trade/business (e.g. running a conservancy department) can be an ‘industry’ – laid the foundation for an expansive reading of Section 2(j).
State of Bombay v. Hospital Mazdoor Sabha (1960)	Held a hospital run by the government to be an ‘industry’; emphasised organised employer-employee cooperation over profit motive.
Workmen of Dimakuchi Tea Estate v. Management (1958)	For a dispute to be an ‘industrial dispute’ under Section 2(k), the person on whose behalf it is raised must have a direct/substantial interest in the employer-employee relationship (‘community of interest’ test).
Bangalore Water Supply & Sewerage Board v. A. Rajappa (1978)	Seven-judge Bench laid down the expansive ‘Triple Test’ for ‘industry’ (see dedicated section below).
Excel Wear v. Union of India (1978)	Struck down the blanket ban on closure as unconstitutional; led to the permission-based Section 25-O regime.
Workmen of Firestone Tyre & Rubber Co. v. Management (1973)	Clarified principles for computing retrenchment compensation and continuity of service.
State of U.P. v. Jai Bir Singh (2026) – 9-Judge Bench	Reconsidered but substantially retained the Rajappa Triple Test; clarified its prospective, non-retroactive application (see final section).

10. Unfair Labour Practices and the Fifth Schedule

Section 2(ra) defines ‘unfair labour practice’ as any practice specified in the Fifth Schedule. Section 25T prohibits the commission of unfair labour practices by employers, workmen and trade unions; Section 25U prescribes penalties (imprisonment up to 6 months, or fine up to ₹1,000, or both).

Fifth Schedule, Part I – by employers and trade unions of employers

• Interfering with, restraining or coercing workmen in the exercise of their right to organise, form or join a trade union.
• Establishing employer-sponsored trade unions.
• Discouraging trade union membership through discriminatory treatment.
• Discharging or dismissing workmen by falsely implicating them in a criminal case, or by abusing the employer’s position for victimisation.
• Abolishing work of a permanent nature and giving it to contractors merely to deprive workmen of the status/privileges of regular workmen.
• Recruiting workmen during a strike which is not illegal, or transferring a workman mala fide.

Fifth Schedule, Part II – by workmen and trade unions of workmen

• Advising or instigating an illegal strike.
• Coercive picketing that obstructs public passage or intimidates non-striking workmen.
• Stay-in, sit-down, pen-down or lightning (wild-cat) strikes contrary to the terms of employment.
• Gherao of members of the management or their families.

11. Transition to the Industrial Relations Code, 2020

The Industrial Relations Code, 2020 subsumes and repeals three central labour laws – the Trade Unions Act, 1926; the Industrial Employment (Standing Orders) Act, 1946; and the Industrial Disputes Act, 1947. It came into force, along with the other three labour codes, on 21 November 2025.

• Higher thresholds – The threshold for requiring prior government permission before lay-off, retrenchment or closure is raised from 100 to 300 workmen (with State governments empowered to notify a different threshold).
• Fixed-term employment – ‘Fixed-term employment’ is formally recognised, with fixed-term employees entitled to the same statutory benefits as permanent workmen on a pro-rata basis.
• Grievance Redressal Committee – Every industrial establishment with 20 or more workers must set up a Grievance Redressal Committee with equal representation of employers and workers.
• Strike notice for all industries – Notice requirements for strikes/lockouts are extended to all industrial establishments (not just public utility services); a 14-day (up to 60-day, as applicable) notice is mandatory, and strikes/lockouts are barred during and for 60 days after proceedings before a Tribunal/National Industrial Tribunal.
• Re-skilling fund – Employers retrenching workmen must contribute 15 days’ wages to a worker’s re-skilling fund.
• Redefinition of ‘industry’ – ‘Industry’ is defined afresh under Section 2(p) of the Code, with specific carve-outs (e.g., institutions for charitable, social or philanthropic services run mainly on a voluntary/donation basis) – to be interpreted independently of the old Section 2(j) jurisprudence (see final section).

12. UPSC Angles on the Industrial Disputes Act, 1947

• Prelims – Definitions and thresholds (workman, industry, industrial dispute, lay-off vs. retrenchment vs. closure, 50/100/300-worker cut-offs).
• Prelims – Match-the-following on landmark cases and the doctrine they established.
• Prelims – Composition and hierarchy of the five-tier dispute resolution machinery.
• Mains – Discuss the rationale for consolidating 29 central labour laws into four labour codes, and the debate between labour welfare and ease of doing business (GS-II/III).
• Mains – Analyse the judicial evolution of the definition of ‘industry’ from D.N. Banerji to the 2026 nine-judge Bench ruling, and its implications for public-sector/government employees (GS-II).
• Mains – Evaluate whether raising the threshold for retrenchment/closure permission to 300 workers dilutes worker protection or improves industrial competitiveness (GS-III, Essay).

13. Frequently Asked Questions

Q1. Is every government department an ‘industry’ under the Act?

No. Sovereign functions of the State (defence, legislation, administration of justice, etc.) are excluded. However, if a government department carries on an activity that is otherwise organised like a trade or business (e.g. running workshops, hospitals, water boards), it may qualify – subject to the Triple Test and its refinements (see Section 14 below).

Q2. What is the difference between lay-off, retrenchment and closure?

Lay-off is a temporary inability to provide work while the employment relationship continues; retrenchment is a permanent termination of specific workmen’s services while the establishment continues to function; closure is the permanent shutting down of the establishment itself.

Q3. Can a single, aggrieved workman raise an ‘industrial dispute’ without union support?

Ordinarily disputes must be sponsored by a union or a substantial body of workmen. However, Section 2A creates a deeming fiction: disputes relating to the discharge, dismissal, retrenchment, or termination of an individual workman are deemed to be industrial disputes even without such espousal.

Q4. Are strikes an absolute right of workmen in India?

No. The right to strike is a legal, statutorily regulated right rather than a fundamental right; it is subject to notice requirements (Section 22) and general prohibitions during pendency of proceedings (Section 23), non-compliance with which renders a strike illegal.

Q5. What replaced the Industrial Disputes Act, 1947?

The Industrial Relations Code, 2020, which came into force on 21 November 2025 along with the Code on Wages, the Code on Social Security, and the Occupational Safety, Health and Working Conditions Code.

14. The Supreme Court’s 2026 Reference on Bangalore Water Supply v. Rajappa

★ Latest Development (August 2026) A nine-Judge Constitution Bench of the Supreme Court delivered its verdict on 20 August 2026 in State of U.P. v. Jai Bir Singh (2026 INSC 897), reconsidering the correctness of the 1978 Bangalore Water Supply ruling.

14.1 Background – how the reference reached a nine-judge Bench

On 21 February 1978, a seven-judge Bench in Bangalore Water Supply & Sewerage Board v. A. Rajappa gave an expansive, functional meaning to ‘industry’ under Section 2(j) of the Industrial Disputes Act, 1947, holding that BWSSB – a statutory body performing an essential civic function – was nonetheless an ‘industry’. Justice V.R. Krishna Iyer’s opinion formulated the celebrated ‘Triple Test’.

• Systematic activity organised by cooperation between employer and employee (the direct and substantial element, not merely any cooperation).
• For the production and/or distribution of goods and services calculated to satisfy human wants and wishes (not spiritual or religious, but inclusive of material services or things).
• Irrespective of profit motive, capital investment, or whether the enterprise is charitable, philanthropic or run by the State in discharge of its welfare functions.

Doubts about the correctness and workability of this broad test – particularly its impact on hospitals, educational institutions, charitable bodies and sovereign government functions – persisted for decades. A three-judge Bench raised concerns in 2002; in State of U.P. v. Jai Bir Singh (2005), a five-judge Bench formally referred the correctness of Bangalore Water Supply to a larger Bench, citing lack of unanimity in the original verdict and its problematic consequences for public welfare institutions and State functions. In 2017, a seven-judge Bench further referred the matter to a nine-judge Constitution Bench for authoritative reconsideration.

14.2 The questions before the nine-Judge Bench

• Whether the Triple Test laid down in Bangalore Water Supply correctly states the law on ‘industry’ under Section 2(j).
• Whether the Industrial Disputes (Amendment) Act, 1982 (which sought to narrow the definition but was never notified/brought into force) and the Industrial Relations Code, 2020 have any bearing on the 1947 definition.
• Whether social welfare schemes and activities of government departments/instrumentalities can be construed as ‘industrial activities’.
• What precisely falls within the ‘sovereign functions’ exception carved out from the definition of industry.

14.3 The verdict (20 August 2026) – State of U.P. v. Jai Bir Singh, 2026 INSC 897

A nine-Judge Bench headed by Chief Justice of India Surya Kant – with Justices B.V. Nagarathna, P.S. Narasimha, Dipankar Datta, Ujjal Bhuyan, Satish Chandra Sharma, Joymalya Bagchi, Alok Aradhe and Vipul M. Pancholi – delivered a set of separate opinions with significant internal disagreement, but converged on the operative outcome.

• Triple Test substantially retained – The core framework of the Triple Test has “stood the test of time” and does not require outright rejection or overruling; the precedent has been followed in roughly 84 subsequent decisions over nearly five decades.
• Refinement floated, not imposed – The CJI’s opinion (for himself and three other judges) proposed a possible recalibration of the Triple Test to give greater weight to the commercial character of an activity – but explicitly framed this only as a hypothesis for future cases, not a binding reformulation disturbing settled law.
• Divergent reasoning, same result – Justice Nagarathna held the reference itself was unnecessary, finding the original 1978 majority ratio to be good law requiring no reconsideration. Justices Datta and Bhuyan (jointly) held that the 2005 reference order did not meet the threshold for disturbing settled precedent. Justice Bagchi affirmed the Triple Test as correctly decided on the merits, including its treatment of sovereign functions, charitable institutions, clubs and liberal professions.
• Prospective effect only – Crucially, the Bench unanimously held that whatever view individual judges took on the correctness of Bangalore Water Supply, all disputes pending under the (now repealed) Industrial Disputes Act, 1947 will continue to be decided by applying the original 1978 Triple Test as it stood. “Judgments, settlements and determinations that are no longer subject to challenge shall remain undisturbed.”
• No bearing on the Industrial Relations Code – The Bench erected a firewall between the old and new regimes: the definition of ‘industry’ under Section 2(p) of the Industrial Relations Code, 2020 must be interpreted entirely on its own text and scheme, uncoloured by either the original Bangalore Water Supply ratio or any reformulation debated in this judgment.
• Sovereign function narrowly read – Justice Bagchi’s opinion separately affirmed – as an application of the retained Triple Test – that ‘sovereign functions’ must be confined to the narrow, non-justiciable core of Statehood (defence, legislative, judicial, primary administrative functions) rather than extended to welfare schemes; that charitable/religious/educational bodies remain ‘industry’ wherever an organised employer-employee relationship exists; and that large, systematically run clubs and professional establishments (as distinct from solitary practitioners) also qualify.

14.4 Significance for UPSC

• A rare instance of a nine-Judge Constitution Bench being convened specifically to reconsider a labour-law precedent – tests understanding of the judicial hierarchy for reconsidering earlier decisions (3-Judge → 5-Judge → 7-Judge → 9-Judge references).
• Reinforces the doctrine of stare decisis: a precedent followed consistently for decades acquires a settled character that courts are reluctant to unsettle, even where individual judges have reservations about its original reasoning.
• Demonstrates how repeal of the parent statute (ID Act, 1947, repealed by the Industrial Relations Code, 2020) can render a pending constitutional reference largely prospective/transitional rather than of continuing operative significance for future disputes.
• Highlights the equality-based rationale (Article 14) for not withdrawing labour protection from government employees performing non-sovereign, welfare-linked functions – relevant for GS-II discussions on social justice and labour rights of State employees.
• The judgment leaves the interpretation of ‘industry’ under Section 2(p) of the Industrial Relations Code, 2020 completely open for future litigation – a live area to watch for further developments.