Public Interest Litigation and Judicial Activism: Cases and PYQs
Complete notes on public interest litigation and judicial activism for competitive exams: Articles 32, 226, 39A and 142, locus standi, landmark cases and limits.
By GK24 Editorial Team· Published · 5 min read

Public Interest Litigation, usually shortened to PIL, is a petition filed in the Supreme Court under Article 32 or in a High Court under Article 226 by any public-spirited person on behalf of people who cannot reach the court themselves. It turned the courtroom, which had always been a place where a person came with a personal grievance, into a forum where poverty, bonded labour, prison conditions, pollution and corruption could be raised by a stranger to the dispute. Judicial activism is the broader habit of mind behind it: the willingness of judges to read rights expansively and to issue directions to the executive when a constitutional duty is being ignored. Examiners ask this chapter every year because it ties together Article 32, Article 226, Article 39A, Article 142 and a short list of landmark cases whose names and years a paper can test in one line.
What makes a petition a PIL
In ordinary litigation only the person whose own right is violated can approach the court. That requirement is called locus standi, Latin for a place of standing. A PIL relaxes it: the petitioner need not be the injured party and need not show any personal loss. The matter must involve a question of public interest, not a private dispute dressed up as one, and the court will not entertain a petition filed for publicity, for private gain or out of political rivalry. Professor Upendra Baxi preferred the name Social Action Litigation, because the Indian form grew out of the condition of the poor rather than out of organised interest groups as in the United States.
Constitutional basis
PIL has no separate article of its own. It rests on provisions the Constitution already contained. Article 32 gives every person the right to move the Supreme Court for the enforcement of fundamental rights, and Dr B. R. Ambedkar called it the heart and soul of the Constitution. Article 226 gives the High Courts a wider writ power, usable for fundamental rights and for any other legal right. Article 39A, a Directive Principle inserted by the Forty-second Amendment Act of 1976, directs the State to secure equal justice and to provide free legal aid so that no citizen is denied justice because of poverty. Article 142 lets the Supreme Court pass any order necessary for doing complete justice in a case before it, and it is the source of many of the directions issued in PIL matters.
How PIL began
Two judges are remembered as its architects, Justice P. N. Bhagwati and Justice V. R. Krishna Iyer. In Sunil Batra v. Delhi Administration the Supreme Court treated a letter written by a prisoner about the treatment of a fellow inmate as a writ petition, and that practice of accepting a postcard or a letter as a petition is called epistolary jurisdiction. In Hussainara Khatoon v. State of Bihar, decided in 1979 on the condition of undertrial prisoners who had already spent longer in jail than the maximum sentence for their offence, the Court ordered their release and held that a speedy trial is part of the right to life under Article 21. That case is generally described as the first PIL in India. In S. P. Gupta v. Union of India in 1981, the Judges Transfer case, the Court stated the relaxed rule of locus standi in the clearest terms and opened the door to every later PIL.
Landmark public interest litigations
| Case | Year | What the Court laid down |
|---|---|---|
| Hussainara Khatoon v. State of Bihar | 1979 | Speedy trial is part of Article 21; undertrials released |
| S. P. Gupta v. Union of India | 1981 | Locus standi relaxed; the Judges Transfer case |
| Bandhua Mukti Morcha v. Union of India | 1984 | Release and rehabilitation of bonded labourers |
| Olga Tellis v. Bombay Municipal Corporation | 1985 | Right to livelihood read into Article 21 |
| M. C. Mehta v. Union of India (Oleum gas leak) | 1987 | Absolute liability of hazardous industry |
| Subhash Kumar v. State of Bihar | 1991 | Right to pollution-free water and air under Article 21 |
| Vellore Citizens Welfare Forum v. Union of India | 1996 | Precautionary principle and polluter pays principle |
| Vishaka v. State of Rajasthan | 1997 | Guidelines against sexual harassment at the workplace |
| State of Uttaranchal v. Balwant Singh Chaufal | 2010 | Guidelines to curb the misuse of PIL |
Judicial activism, restraint and overreach
The expression judicial activism was coined by the American historian Arthur Schlesinger Jr. in 1947. In India it describes a court that reads a right broadly, fills a gap left by the legislature and supervises the executive until a constitutional duty is performed. The Vishaka guidelines are the standard illustration: with no law on sexual harassment at the workplace, the Court framed binding guidelines that governed the field until Parliament passed its own law in 2013. Judicial restraint is the opposite posture, under which a court leaves policy to the elected branches and confines itself to legality. Judicial overreach is activism carried past the constitutional line, where the court effectively makes policy or runs an administration. The separation of powers and the basic structure doctrine of Kesavananda Bharati mark the boundary that the debate turns on.
The limits the Court itself has drawn
- A PIL cannot be filed for a purely private grievance or a service dispute.
- Frivolous and motivated petitions attract exemplary costs, and in Balwant Singh Chaufal the Court asked every High Court to frame rules for verifying a petitioner's credentials.
- The court checks whether the petitioner has any personal interest in the outcome before admitting the matter.
- Policy choices, such as what a budget should contain, remain with the executive and the legislature.
For an aspirant the practical point is that PIL is not a new right but a procedure. It works because Article 32 is itself a fundamental right, so the Supreme Court cannot refuse to hear a genuine complaint of a violation, and because Article 39A commits the State to carrying justice to people who cannot pay for it.
Exam Point of View
Papers test four things from this chapter. First, the article numbers: 32 for the Supreme Court, 226 for the High Courts, 39A for free legal aid and 142 for complete justice, with 39A often paired with the 42nd Amendment. Second, case-and-subject matching: Hussainara Khatoon with undertrials and speedy trial, S. P. Gupta with locus standi, Vishaka with workplace harassment, Olga Tellis with livelihood, Subhash Kumar with a pollution-free environment. Third, terminology: locus standi, epistolary jurisdiction, Social Action Litigation, judicial activism, restraint and overreach. Fourth, the people: Bhagwati and Krishna Iyer as pioneers, Schlesinger for the term, Baxi for the alternative name. The common traps are confusing the first PIL (Hussainara Khatoon) with the case that settled locus standi (S. P. Gupta), and writing Article 32 where a High Court is meant.
Important Facts
| First PIL in India | Hussainara Khatoon v. State of Bihar (1979) |
|---|---|
| Locus standi relaxed | S. P. Gupta v. Union of India (1981), the Judges Transfer case |
| PIL in the Supreme Court | Article 32, itself a Fundamental Right |
| PIL in a High Court | Article 226, wider in subject matter than Article 32 |
| Free legal aid | Article 39A, inserted by the 42nd Amendment Act, 1976 |
| Complete justice | Article 142 |
| Pioneering judges | Justice P. N. Bhagwati and Justice V. R. Krishna Iyer |
| Term judicial activism | Coined by Arthur Schlesinger Jr. in 1947 |
| Alternative name | Social Action Litigation, suggested by Upendra Baxi |
| Guidelines against misuse | State of Uttaranchal v. Balwant Singh Chaufal (2010) |
| Vishaka guidelines | 1997, sexual harassment of women at the workplace |
| Pollution-free environment | Subhash Kumar v. State of Bihar (1991), under Article 21 |
Practice MCQs on this topic
Which one of the following writs can be issued by a High Court to secure the liberty of an individual?
- A.Mandamus
- B.Quo-warranto
- C.Habeas Corpus
- D.Prohibition
Show answer
Habeas corpus is Latin for you may have the body. A High Court under Article 226, and the Supreme Court under Article 32, issues it to the person or authority holding someone in custody, ordering that the detenu be produced before the court so that the legality of the detention…
Read the full explanation →Which case is generally regarded as the first public interest litigation in India?
- A.S. P. Gupta v. Union of India
- B.Hussainara Khatoon v. State of Bihar
- C.Vishaka v. State of Rajasthan
- D.Bandhua Mukti Morcha v. Union of India
Show answer
Decided in 1979, it arose from a newspaper report on undertrial prisoners in Bihar who had been in jail awaiting trial for longer than the maximum sentence their alleged offences carried.
Read the full explanation →In which case, popularly called the Judges Transfer case, did the Supreme Court lay down the relaxed rule of locus standi?
- A.Kesavananda Bharati v. State of Kerala
- B.Maneka Gandhi v. Union of India
- C.S. P. Gupta v. Union of India
- D.Minerva Mills v. Union of India
Show answer
The Supreme Court held that where a legal wrong is caused to a person or a class of persons who cannot approach the court because of poverty, disability or a socially disadvantaged position, any member of the public acting in good faith may move the court on their behalf.
Read the full explanation →Which Article of the Constitution directs the State to provide free legal aid so that justice is not denied because of economic disability?
- A.Article 38
- B.Article 39A
- C.Article 41
- D.Article 43A
Show answer
It is a Directive Principle that requires the State to secure a legal system which promotes justice on the basis of equal opportunity, and in particular to provide free legal aid by suitable legislation or schemes so that no citizen is denied the opportunity to secure justice by reason of…
Read the full explanation →Article 39A was inserted into the Constitution by which amendment?
- A.The 24th Amendment Act, 1971
- B.The 42nd Amendment Act, 1976
- C.The 44th Amendment Act, 1978
- D.The 86th Amendment Act, 2002
Show answer
Often called the Mini Constitution because of the number of provisions it touched, it added several Directive Principles, among them Article 39A on equal justice and free legal aid, Article 43A on worker participation in management and Article 48A on the protection of the environment, forests and wildlife.
Read the full explanation →The term judicial activism was coined in 1947 by which person?
- A.Arthur Schlesinger Jr.
- B.Upendra Baxi
- C.Alexander Hamilton
- D.Roscoe Pound
Show answer
The phrase travelled into Indian constitutional writing and now describes a court that reads rights expansively, fills a legislative vacuum and supervises the executive until a constitutional duty is discharged.
Read the full explanation →The Vishaka guidelines issued by the Supreme Court in 1997 dealt with which subject?
- A.Bonded labour in stone quarries
- B.Sexual harassment of women at the workplace
- C.Pollution of the river Ganga
- D.Custodial torture by the police
Show answer
The petition followed the gang rape of a social worker in rural Rajasthan who had tried to stop a child marriage.
Read the full explanation →Which Article empowers the Supreme Court to pass any decree or order necessary for doing complete justice in a matter before it?
- A.Article 32
- B.Article 136
- C.Article 142
- D.Article 226
Show answer
It says that the Supreme Court in the exercise of its jurisdiction may pass such decree or make such order as is necessary for doing complete justice in any cause or matter pending before it, and that such a decree is enforceable throughout India.
Read the full explanation →Epistolary jurisdiction, as developed by the Supreme Court of India, means that
- A.a letter or postcard addressed to the court can be treated as a writ petition
- B.only a registered advocate may file a writ petition
- C.a petition must be filed in English
- D.an appeal lies directly from a tribunal to the Supreme Court
Show answer
Epistolary jurisdiction is the practice by which the Supreme Court, and later the High Courts, treated a simple letter or postcard describing a violation of rights as a formal writ petition, dispensing with the usual requirements of form, court fee and a lawyer.
Read the full explanation →In which case did the Supreme Court hold that the right to a pollution-free environment is part of the right to life under Article 21?
- A.Olga Tellis v. Bombay Municipal Corporation
- B.Subhash Kumar v. State of Bihar
- C.Unni Krishnan v. State of Andhra Pradesh
- D.D. K. Basu v. State of West Bengal
Show answer
The Court also warned in the same judgment that a PIL must not be used to settle a personal score, and it dismissed the petition on that ground.
Read the full explanation →Which two judges are most often described as the pioneers of public interest litigation in India?
- A.Justice H. R. Khanna and Justice M. Hidayatullah
- B.Justice P. N. Bhagwati and Justice V. R. Krishna Iyer
- C.Justice K. Subba Rao and Justice A. N. Ray
- D.Justice Y. V. Chandrachud and Justice P. B. Gajendragadkar
Show answer
Both sat on the Supreme Court in the late nineteen seventies and early eighties, both wrote the judgments that relaxed locus standi and accepted letters as petitions, and both pushed free legal aid and prison reform through the court.
Read the full explanation →In State of Uttaranchal v. Balwant Singh Chaufal (2010), the Supreme Court mainly
- A.abolished public interest litigation in service matters
- B.compiled guidelines to prevent the misuse of public interest litigation
- C.held that only the Attorney General may file a PIL
- D.transferred all PILs to the High Courts
Show answer
In this 2010 judgment the Supreme Court traced the history of PIL and, worried that the device was being used for publicity, private profit and political rivalry, compiled a set of directions for the courts.
Read the full explanation →Frequently Asked Questions
What is the difference between a PIL and an ordinary writ petition?
In an ordinary writ petition only the person whose own right is violated can approach the court. In a PIL the rule of locus standi is relaxed, so any public-spirited person may file on behalf of people who cannot reach the court because of poverty, disability or a disadvantaged position. The subject must be a genuine matter of public interest and not a private dispute.
Which case is called the first PIL in India?
Hussainara Khatoon v. State of Bihar, decided in 1979 on the condition of undertrial prisoners in Bihar. The Supreme Court ordered their release and held that a speedy trial is part of the right to life under Article 21.
Can a PIL be filed by writing a simple letter to the court?
Yes. Under what is called epistolary jurisdiction the Supreme Court and the High Courts have treated letters and even postcards describing a violation of rights as writ petitions. The practice began with Sunil Batra v. Delhi Administration, where a prisoner's letter about a fellow inmate was taken up as a petition.
What is the difference between judicial activism and judicial overreach?
Judicial activism is a court reading rights expansively and directing the executive to perform a constitutional duty, as in the Vishaka guidelines. Judicial overreach is when the court crosses the constitutional line and effectively makes policy or runs an administration, which disturbs the separation of powers.
Can a PIL be dismissed with costs?
Yes. Courts impose exemplary costs on petitions filed for publicity, private gain or political rivalry. In State of Uttaranchal v. Balwant Singh Chaufal (2010) the Supreme Court asked the High Courts to verify a petitioner's credentials and to discourage petitions filed for extraneous reasons.
Which Article is the basis of free legal aid in India?
Article 39A, a Directive Principle inserted by the 42nd Amendment Act of 1976. It directs the State to secure equal justice and to provide free legal aid so that no citizen is denied justice because of economic or other disabilities.
Sources
- The Constitution of India (Articles 32, 39A, 142 and 226) — Legislative Department, Ministry of Law and Justice
- Indian Constitution at Work (Class XI), Chapter 6: Judiciary — NCERT





