The Role of Public Interest Litigation in Promoting Justice

When the Constitution promises justice to every citizen but the legal system remains too expensive, too complex, or simply too distant for millions of people, a critical gap opens up between rights on paper and rights in practice. Public Interest Litigation – or PIL – was born precisely to bridge that gap. It is a judicial mechanism that allows any public-spirited individual, group, or organisation to approach the courts on behalf of those who cannot do so themselves, transforming the courtroom from a space for private disputes into a forum for collective justice. Over the past four decades, PIL has reshaped the relationship between citizens, the state, and the judiciary in ways that few legal instruments have managed to do.

What is public interest litigation? 🔗

Public Interest Litigation (PIL) refers to legal action initiated in a court of law for the enforcement of public or general interest, particularly where a section of the public has an interest that affects their legal rights or liabilities. As defined by the Supreme Court in Janata Dal v. H.S. Chaudhary (1993), PIL means a legal action started for the enforcement of public or general interest where the concerned matter goes beyond the personal grievance of a single individual.

Unlike conventional litigation, PIL does not involve a dispute between two opposing parties seeking relief for themselves. Instead, it is a cooperative effort involving the petitioner, the state or public authority, and the court – all working together to protect constitutional and legal rights of vulnerable sections of society. A PIL can be filed under Article 32 of the Constitution in the Supreme Court, under Article 226 in a High Court, or under Section 133 of the Code of Criminal Procedure before a Magistrate’s court. Crucially, there is no specific statute that defines or governs PIL; the doctrine has evolved entirely through judicial pronouncements, making court judgments the primary source of law in this domain.

The origins: from individual rights to public justice 🔗

Before PIL emerged, courts in India largely followed the adversarial system of litigation inherited from English common law, which required the person approaching the court to demonstrate a direct, personal injury. This locus standi requirement effectively shut the courtroom doors for those who suffered systemic injustices – bonded labourers, undertrial prisoners, slum dwellers – but lacked the financial or educational means to file a legal case.

The seeds of PIL in India were first sown by Justice V.R. Krishna Iyer in 1976 in Mumbai Kamagar Sabha v. Abdul Bhai, where he argued that the legal system must serve the interests of the poor and the oppressed. But it was the post-Emergency period of the late 1970s that truly accelerated the movement. The changing socio-political dynamics and a growing realisation of the courts’ potential to foster social justice drove this transformation. Justices P.N. Bhagwati and V.R. Krishna Iyer became the principal architects of PIL jurisprudence, advocating for greater judicial intervention to protect fundamental rights, especially for those who were poor, uneducated, or marginalised.

A significant procedural shift that made PIL possible was the courts beginning to treat letters and postcards from ordinary citizens as valid writ petitions – a practice called epistolary jurisdiction. This innovation reflected judicial sensitivity towards the weaker sections of society, allowing even those without formal legal representation to trigger judicial action.

Landmark cases that defined PIL 🔗

Hussainara Khatoon v. State of Bihar (1979) 🔗

This is widely considered the first reported instance of PIL in India. Advocate Kapila Hingorani filed a petition – not on behalf of any single individual but on behalf of all undertrial prisoners in Bihar who had been detained for periods longer than the maximum possible sentence for their alleged offences. Justice P.N. Bhagwati immediately ordered the release of 70 such undertrial prisoners, and eventual directions led to the release of nearly 40,000 undertrials across India. The case established the right to a speedy trial as a fundamental right under Article 21 and stressed the state’s duty to provide free legal aid. It remains a defining moment in the PIL movement.

S.P. Gupta v. Union of India (1981) 🔗

Also known as the Judges’ Transfer Case, this is the judgment that formally gave PIL its name and its legal foundation. Justice Bhagwati held that “any member of the public or social action group acting bonafide” could invoke the writ jurisdiction of the High Courts or the Supreme Court seeking redressal against violations of legal or constitutional rights – even if they were not personally affected. This dismantled the rigid locus standi rule and opened the courthouse to public-spirited individuals. The judgment explicitly acknowledged that millions of exploited and legally ignorant people in India had no practical means of approaching the courts, and that this had to change.

Bandhua Mukti Morcha v. Union of India (1984) 🔗

This was the first PIL filed by an NGO. The Supreme Court ordered the release of all bonded labourers and provided them with compensation, issuing comprehensive directives for their rehabilitation and for better implementation of labour laws. The case was pivotal because it demonstrated that the judiciary could go beyond merely declaring rights – it could actively direct the state to remedy structural injustices.

M.C. Mehta v. Union of India (1988 onwards) 🔗

Advocate M.C. Mehta filed a series of PILs on environmental issues – Ganga river pollution, hazardous industries near the Taj Mahal, and vehicular pollution in Delhi – that resulted in some of the most far-reaching environmental directives ever issued by an Indian court. These cases established the “Polluter Pays” principle in Indian law and pushed the courts into the domain of sustainable development policy. The Ganga pollution case alone resulted in landmark judgments against more than 50,000 polluting industries and directed over 250 towns and cities to establish sewage treatment plants.

An earlier environmental milestone was the Rural Litigation and Entitlement Kendra (RLEK) v. State of Uttar Pradesh (1985), where the Supreme Court accepted a letter as a PIL concerning illegal limestone mining in the Mussoorie Hills – India’s first environmental PIL – and ordered a halt to the operations. The arguments made in this case were also instrumental in the passage of the Environment Protection Act, 1986.

Vishaka v. State of Rajasthan (1997) 🔗

This remains one of PIL’s most consequential contributions to gender justice. The case emerged after the brutal gang rape of Bhanwari Devi, a social worker who resisted child marriage. Since India had no law against workplace sexual harassment at the time, the Supreme Court framed the Vishaka Guidelines, which became the first legal framework to protect women from harassment at work. These guidelines were later codified into the Sexual Harassment of Women at Workplace (Prevention, Prohibition and Redressal) Act, 2013. The case powerfully demonstrated how PIL could respond to legislative gaps and protect constitutional rights when the government failed to act.

PIL as a tool for social justice and policy change 🔗

The domains that PIL has touched are remarkably broad. PIL is instrumental in promoting the public interest by addressing issues of broader societal concern, such as environmental protection, public health, human rights, and social justice. Courts have used PIL to enforce mid-day meal schemes in government schools, protect the rights of pavement dwellers, ensure humane conditions in prisons and mental health institutions, and hold polluting industries accountable.

Crucially, PIL has also expanded the constitutional meaning of the right to life under Article 21. The court expanded the scope of Article 21 so that issues like environmental protection, bonded labour, custodial deaths, prison conditions, and child rights entered the courtroom through PILs. Rights that were never explicitly listed – such as the right to a clean environment, the right to livelihood, and the right to education – were read into Article 21 through PIL-driven judicial interpretation.

PIL also directly supports the Directive Principles of State Policy, particularly Article 39A, which directs the state to secure equal justice and free legal aid. PIL gives practical shape to Article 39A by making justice accessible to the marginalised, enhancing their access to courts and enforcement of fundamental rights.

In terms of government accountability, PIL has served as a check on executive inaction and misconduct. Any government policies conflicting with constitutional principles or public interests can be challenged via PIL, and this oversight acts as a safeguard against arbitrary state actions while promoting good governance. Many crucial legal and policy reforms owe their existence to PIL initiatives – from the Vishaka Guidelines to stricter environmental standards and the implementation of the Right to Education Act.

The role of NGOs and civil society 🔗

Civil society organisations have been among the most active users of the PIL mechanism. NGOs serve as petitioners or facilitators in PIL cases, often bringing public attention to pressing issues that government agencies overlook. NGOs often provide legal assistance to individuals or groups who lack resources to approach the courts independently. The Bandhua Mukti Morcha case set a defining precedent by establishing that registered organisations could file PILs on behalf of exploited groups, opening the door for institutionalised advocacy through courts.

The combination of judicial activism and civil society engagement has produced a unique model of public law enforcement in India, one where the courts do not simply react to disputes but actively engage with systemic problems – sometimes appointing commissions, monitoring compliance, and issuing continuing mandamus orders to ensure that directions are actually implemented.

Challenges and concerns 🔗

Despite its achievements, PIL has attracted genuine and substantive criticism. Perhaps the most persistent concern is misuse. The Supreme Court has cautioned that PILs should not turn into “Publicity Interest Litigation, Politics Interest Litigation, or Private Interest Litigation” – a telling acknowledgment of how far the mechanism has drifted from its original purpose in some cases. Petitions have been filed for personal vendettas, business rivalries, and political point-scoring, burdening an already overburdened judiciary.

A related concern is judicial overreach. Critics argue that the judiciary, under the guise of PILs, sometimes blurs the separation of powers, encroaching upon the domain of the executive – the order mandating the conversion of Delhi’s public transport fleet to CNG is often cited as an example of judicial policy-making. When courts venture into areas requiring technical expertise or executive discretion, the quality and implementability of their directions can be questioned.

There are also practical challenges: delays in the legal system, vacancies in the judiciary, and the lack of effective implementation of court verdicts mean that many landmark PIL judgments remain only partially enforced. Orders directing the clean-up of the Ganga River, for instance, have faced persistent compliance gaps despite decades of judicial monitoring.

To address misuse, the Supreme Court has laid down strict guidelines – only genuine and bonafide PILs should be entertained, High Courts must formulate clear rules for PIL admission, and courts must ensure no personal gain or political motive drives the petition. Courts are also empowered to impose exemplary costs on petitioners who file frivolous cases.

PIL and the future: emerging frontiers 🔗

As society evolves, so does the scope of PIL. Emerging trends in judicial activism point to areas where PIL may continue to play a transformative role, such as digital rights, climate change, and socio-economic justice. With increasing awareness of rights among citizens, greater penetration of media, and the expanding scope of Article 21, PIL remains a dynamic and adaptive instrument.

The Supreme Court at its founding seemed primed to deploy PIL as a tool for lasting change, and while tensions between activism and restraint have grown, the core promise of PIL – that no one should be denied justice because they lack resources or power – continues to animate its use. The key challenge for the coming decades is to preserve this promise while preventing its exploitation.

What do you think? 🔗

What do you think? PIL has allowed individuals and organisations to use courts as agents of social transformation – but should there be stricter gatekeeping at the admission stage to prevent frivolous petitions from clogging the judiciary? And given that PIL has directly led to landmark legislation like the Sexual Harassment of Women at Workplace Act, 2013, does this raise questions about the appropriate boundary between judicial lawmaking and parliamentary democracy?

References

1. https://vajiramandravi.com/upsc-exam/public-interest-litigation/
2. https://www.nextias.com/blog/public-interest-litigation/
3. https://sheokandlegal.com/articles/pil-in-india-supreme-court-guidelines-and-restrictions/
4. https://www.drishtiias.com/to-the-points/Paper2/public-interest-litigation
5. https://backedbylaw.in/post/public-interest-litigation-pil-in-india-history-evolution-features-key-cases
6. https://rajendralawoffice.com/public-interest-litigation-pil-insights-from-supreme-court-practice/
7. https://www.scobserver.in/journal/the-story-of-the-pil/
8. https://thelaw.institute/criminal-justice-research-and-advocacy/evolution-impact-pil-jurisprudence-india/
9. https://www.apnilaw.com/upsc/indian-constitution/public-interest-litigation-pil-in-india-landmark-cases-and-their-impact/
10. https://thelegalquorum.com/public-interest-litigation-as-a-tool-for-human-rights-advocacy-in-india/
11. https://www.drishtijudiciary.com/editorial/public-interest-litigation-pil
12. https://www.ekamiasacademy.com/blog-indian-polity-public-interest-litigation-pil-in-india-evolution-significance-challenges/
13. https://www.drishtijudiciary.com/blog/understanding-pils-impact-on-society-and-judicial-overreach
14. https://www.ijcrt.org/papers/IJCRT2410347.pdf
15. https://www.scobserver.in/75-years-of-sc/what-a-jagged-little-pil-the-peoples-court-at-75/