Labour Laws and Practice · Constitution and Labour Laws

Classification and Codification of Labour Laws in India

Updated 11 October 2026 · Fact-checked

Classification groups labour laws by purpose: regulatory, wage-related, social security, industrial relations and welfare. Codification merged 29 central Acts into four Labour Codes: Code on Wages, 2019; Industrial Relations Code, 2020; Code on Social Security, 2020; and OSH Code, 2020. In exams, name the code, the Acts it replaces and its core scope.

Understand Classification and Codification of Labour Laws

Labour law is the body of rules that governs the relationship between employers, workers and the State. It covers pay, working conditions, job security, collective action and social protection. India has many such laws because labour is a subject on which both the Centre and the States can legislate.

Over the years these laws grew Act by Act. Each Act had its own definitions, such as 'wages', 'employee' or 'establishment', its own thresholds and its own authorities. This caused overlap, confusion and heavy compliance for employers. Codification means pulling related Acts into one law with common definitions and a single set of authorities.

The usual way to classify labour laws is by the subject they deal with:

Laws on wages: minimum wages, timely payment, deductions, bonus and equal remuneration.
Laws on industrial relations: trade unions, standing orders, dispute resolution, strikes, lay-off, retrenchment and closure.
Laws on social security: provident fund, State insurance, gratuity, maternity benefit and employee compensation.
Laws on working conditions, safety and welfare: factories, mines, contract labour, migrant workers and building workers.

The four Labour Codes follow this same split. The Code on Wages, 2019 replaced the Payment of Wages Act, 1936, the Minimum Wages Act, 1948, the Payment of Bonus Act, 1965 and the Equal Remuneration Act, 1976. The Industrial Relations Code, 2020 replaced the Trade Unions Act, 1926, the Industrial Employment (Standing Orders) Act, 1946 and the Industrial Disputes Act, 1947. The Code on Social Security, 2020 replaced nine Acts, including the Employees' Compensation Act, 1923, the Employees' State Insurance Act, 1948, the Employees' Provident Funds and Miscellaneous Provisions Act, 1952, the Maternity Benefit Act, 1961 and the Payment of Gratuity Act, 1972. The Occupational Safety, Health and Working Conditions Code, 2020 replaced thirteen Acts, including the Factories Act, 1948, the Mines Act, 1952, the Contract Labour (Regulation and Abolition) Act, 1970 and the Inter-State Migrant Workmen Act, 1979.

The ILO has influenced this field through its conventions and the idea of decent work. India, as an ILO member, shapes its labour legislation with those standards in view. Check the exact date of enforcement and any notified rules in your latest study material, since commencement is by notification.

Key rules to remember

Code on Wages, 2019: Replaces 4 Acts: Payment of Wages 1936 + Minimum Wages 1948 + Payment of Bonus 1965 + Equal Remuneration 1976; Subject: wages, bonus and non-discrimination in pay.
Industrial Relations Code, 2020: Replaces 3 Acts: Trade Unions 1926 + Industrial Employment (Standing Orders) 1946 + Industrial Disputes 1947; Subject: unions, standing orders, dispute resolution, strikes, lay-off, retrenchment, closure.
Code on Social Security, 2020: Replaces 9 Acts, including Employees' Compensation 1923, ESI 1948, EPF and MP 1952, Maternity Benefit 1961, Gratuity 1972; Subject: insurance, provident fund, pension, gratuity, maternity and compensation.
OSH Code, 2020: Replaces 13 Acts, including Factories 1948, Mines 1952, Contract Labour 1970, Inter-State Migrant Workmen 1979; Subject: safety, health, working conditions and welfare.
Total consolidation: 4 + 3 + 9 + 13 = 29 central Acts into 4 Codes; Use this count to check your list in the answer.

How to solve Classification and Codification of Labour Laws questions

Most questions ask you to classify, list Acts, compare Codes or explain why codification was needed. Use one pattern for all of them.

1Read the verb: classify, enumerate, distinguish or discuss.
2Identify the subject of the question: wages, industrial relations, social security or safety and working conditions.
3Name the relevant Code with its year.
4List the old Acts it replaced, with years, grouped under that Code.
5State the core scope of the Code in one or two lines.
6If the question is about reasons, add: overlapping definitions, multiple authorities, heavy compliance and the need for simpler law.
7Close with a one-line conclusion tying the Code to the facts given.

Quickest way: Four-box memory grid

When to use it: Use it when time is short and the question asks which Code covers a given Act or topic.

Draw four boxes labelled Wages, IR, SS and OSH.
Write the subject keywords in each: pay and bonus; unions and disputes; funds and benefits; safety and conditions.
Match the Act in the question to a keyword.
Write the Code name, year and the replaced Act in one line each.

Common mistakes in Classification and Codification of Labour Laws

Placing the Payment of Gratuity Act or Maternity Benefit Act under the Code on Wages.
Both involve money paid to workers, so they look like wage laws.
Fix: Remember that benefits tied to retirement, childbirth, sickness or injury belong to the Code on Social Security, 2020.
Saying the Factories Act, 1948 went into the Industrial Relations Code.
Students link factories with industrial relations.
Fix: Factories, mines and contract labour deal with working conditions and safety, so they sit in the OSH Code, 2020.
Giving the wrong year for a Code, such as 2020 for the Code on Wages.
Three Codes are of 2020 and one is of 2019, so years blur.
Fix: Learn it as: Wages 2019, the other three 2020.
Writing that all labour laws are now only in the four Codes.
Codification is described as complete consolidation.
Fix: Say that 29 central Acts were merged, while other labour laws and State laws may still exist. Check the syllabus list.
Mixing the count of replaced Acts across Codes.
Lists are long and similar.
Fix: Use 4 + 3 + 9 + 13 = 29 as a check on your answer.

Worked examples

Example 1

Identify the Labour Code that now governs each of the following and name the Act it replaced: (a) payment of bonus, (b) registration of trade unions, (c) gratuity, (d) regulation of contract labour.

Show the solution

(a) Bonus is a wage-related matter, so the Code on Wages, 2019 applies. It replaced the Payment of Bonus Act, 1965.
(b) Trade unions are an industrial relations matter, so the Industrial Relations Code, 2020 applies. It replaced the Trade Unions Act, 1926.
(c) Gratuity is a retirement benefit, so the Code on Social Security, 2020 applies. It replaced the Payment of Gratuity Act, 1972.
(d) Contract labour concerns working conditions, so the OSH Code, 2020 applies. It replaced the Contract Labour (Regulation and Abolition) Act, 1970.

Answer: (a) Code on Wages, 2019; (b) Industrial Relations Code, 2020; (c) Code on Social Security, 2020; (d) OSH Code, 2020.

Example 2

Explain why India codified its labour laws and how the resulting Codes are classified. Answer in about six points.

Show the solution

State the problem: many central Acts, each with its own definitions of terms such as wages and employee, caused overlap and confusion.
Add compliance burden: separate registrations, returns and authorities under each Act.
State the aim: simpler, uniform law with common definitions and fewer authorities.
Give the classification: wages, industrial relations, social security, and safety with working conditions.
Name the Codes: Code on Wages, 2019; Industrial Relations Code, 2020; Code on Social Security, 2020; OSH Code, 2020.
Conclude with the count: 29 central Acts were merged into four Codes.

Answer: Codification replaced 29 overlapping central Acts with four subject-based Codes, to give uniform definitions, simpler compliance and clearer authorities.

Exam tips

Always write the Code name with its year and the replaced Acts with their years.
Use the 4 + 3 + 9 + 13 = 29 check before finalising any list.
For distinguish questions, make a short two-column comparison in bullet form: subject, replaced Acts, key authorities.
Link your answer to the facts given: name the Code that fits the issue, then conclude.
Mention that commencement and rules are by notification, and use the latest updates in your study material.

Practice questions from Constitution and Labour Laws

Classification and Codification of Labour Laws in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

CS ExecutiveClassification and Objectives of Labour Laws

Classification and Codification of Labour Laws: frequently asked questions

What are the four Labour Codes in India?

They are the Code on Wages, 2019, the Industrial Relations Code, 2020, the Code on Social Security, 2020 and the Occupational Safety, Health and Working Conditions Code, 2020. Together they merge 29 central labour Acts.

How are labour laws classified?

They are grouped by subject: wages, industrial relations, social security, and safety, health and working conditions. The four Codes follow this same grouping.

Which Acts did the Code on Social Security, 2020 subsume?

It replaced nine Acts, including the Employees' Compensation Act, 1923, the ESI Act, 1948, the EPF and Miscellaneous Provisions Act, 1952, the Maternity Benefit Act, 1961 and the Payment of Gratuity Act, 1972.

Do I need to learn the full list of replaced Acts?

Learn the main Acts under each Code with their years, and the count per Code. Full lists help in enumeration questions, so revise them from your study material.