Union Carbide Corporation v Union of India — the Bhopal gas disaster litigation

Bhopal is the worst industrial disaster in history and the most important mass-tort litigation ever conducted in India. For a torts student it is a case study in the gap between doctrine and delivery. Two years before the settlement, the Supreme Court in M.C. Mehta v Union of India had announced the most claimant-friendly rule of liability in the common law world — absolute, non-delegable, no exceptions, damages scaled to the enterprise. Bhopal was the case that rule had been designed for. It was never applied to it. The claims were settled by negotiation, without any finding of liability, and that settlement has now been held final by a Constitution Bench. Tell the story as an answer to "did the law work?", not as a list of dates.

The plant. Union Carbide India Limited (UCIL) ran a pesticide factory at Bhopal. Its American parent, Union Carbide Corporation (UCC), held just over half the equity and had supplied the design and technology. The plant made the pesticide Sevin, storing large quantities of methyl isocyanate (MIC), an extremely toxic and volatile intermediate. Production had fallen away; the plant ran below capacity with reduced staff and degraded maintenance. The refrigeration unit meant to keep the MIC cool was not working, and the flare tower and scrubber were inadequate to a runaway reaction.

The night. Late on 2 December 1984 water entered storage tank E610, holding some forty tonnes of MIC. The resulting exothermic reaction raised temperature and pressure until, in the small hours of 3 December, the safety valve gave way and a plume of MIC and other gases poured out over the sleeping city. There was no siren anyone could interpret, no evacuation plan, no information about what the gas was — and, most cruelly, no advice that the simplest protection was a wet cloth over the face. People woke choking, ran into the streets, and ran into the gas.

The scale. Estimates of the immediate death toll run from about 2,600 to roughly 3,800; deaths in the following weeks, months and years brought the total far higher. Well over a lakh were left with chronic respiratory, ophthalmic, neurological and reproductive injuries, most of them poor and many illiterate. Within days American plaintiffs' lawyers were in Bhopal signing up victims for contingency-fee litigation in the United States.

The 1985 Act. Parliament's answer was the Bhopal Gas Leak Disaster (Processing of Claims) Act 1985, conferring on the Central Government the exclusive right to represent, and to act in place of, every person entitled to make a claim arising out of the disaster. The Union became the only plaintiff. Its justification is parens patriae — the sovereign's prerogative to act as guardian for those unable to protect themselves. Extending it from minors and persons of unsound mind to a mass of injured and indigent victims was novel. Note the doctrinal point: the Act displaced private rights of action in tort by statute. The victims did not settle their claims; the Government settled them.

1. Should the claims be tried in the United States or in India — forum non conveniens?
2. Was the 1985 Act, which extinguished the victims' own right to sue, constitutionally valid?
3. Was the 1989 settlement valid and binding, having been recorded without notice to the victims or a fairness hearing — and could the Court quash criminal proceedings as part of it?
4. Did the rule of absolute liability in M.C. Mehta apply to UCC?
5. Could the settlement be reopened decades later by a curative petition?

On forum. India argued for the American court: the parent was American, the design and safety standards came from America, the assets were in America, and American damages were on a different scale. UCC argued for India, where the plant, witnesses, records and victims were.

On the settlement. The Union defended it as the only way to get money to victims within their lifetimes. Victims' organisations and public-interest petitioners said it was struck behind their backs, on casualty figures that were plainly too low, at a fraction of the pleaded claim, and that no court could buy off a prosecution for thousands of deaths.

• 1986–87, United States. Judge John F. Keenan dismissed the actions on forum non conveniens subject to three conditions: that UCC submit to Indian jurisdiction and waive limitation; satisfy any Indian judgment comporting with the minimal requirements of due process; and submit to discovery under the US Federal Rules. The Second Circuit affirmed but struck the second and third conditions.
• 1987–88, India. The District Court at Bhopal ordered interim compensation of Rs 350 crore; the MP High Court reduced it to Rs 250 crore.
• 14–15 February 1989. The Supreme Court recorded a settlement: UCC and UCIL to pay US$470 million (about Rs 750 crore) in full and final settlement of all claims, past, present and future; all civil proceedings concluded; all criminal proceedings quashed.
• _Charan Lal Sahu_, AIR 1990 SC 1480. A Constitution Bench upheld the 1985 Act on the parens patriae basis, but read into it that the victims must have a fair opportunity to be heard and that if the compensation proved inadequate the Union must make good the deficiency.
• 3 October 1991, review. The civil settlement was upheld; the quashing of the criminal proceedings was set aside and the prosecutions restored; UCC and UCIL were to fund a hospital at Bhopal; any shortfall was to be met by the Union; and medical insurance cover was to be taken out for persons who might develop symptoms later.
• 14 March 2023. A Constitution Bench dismissed the Union's curative petition for a further Rs 7,844 crore.

Bhopal is a litigation, not one decision with one ratio.

• The 1989 settlement orders decide nothing about liability. They record a compromise; there is no ratio on absolute liability, causation, or a parent's responsibility for its subsidiary.
• The 1991 review yields two binding propositions: a settlement recorded by the Court is not vitiated merely by the absence of a fairness hearing; and a court cannot quash criminal proceedings as part of a civil settlement. The second is the one to cite.
• Charan Lal Sahu — validity of the 1985 Act, the parens patriae basis of the Government's standing, and its obligation to make good any shortfall.
• Keshub Mahindra — the distinction between s. 304 Part II and s. 304A IPC at the charge-framing stage: knowledge of likelihood of death, as against rashness or negligence.
• The 2023 decision — a settlement recorded by the Supreme Court cannot be reopened by curative petition except for fraud, and no "top-up" is available.
• Everything said about the M.C. Mehta principle in these judgments is obiter.

Why the American courts let go. The evidence, the witnesses, the regulators and the victims were in India, and Judge Keenan thought Indian courts capable of trying the case. The Second Circuit struck the judgment-enforcement condition as resting on a mistaken assumption that an Indian decree would not otherwise be enforceable in New York, and the discovery condition as unfair in giving one side American discovery and the other only Indian. The standard criticism is that the effect was to send the victims of an American corporation's technology back to a system whose slowness and modest awards that corporation had every reason to prefer — and the result was that the case received no adjudication anywhere.

Why the Court settled in 1989. The victims needed money now; adjudication would take a generation; the sum was reasonable on the casualty figures then before the Court; and Article 142 empowered the Court to do complete justice.

Why the criminal quashing was undone in 1991. A civil compromise cannot extinguish criminal liability, the offences were not compoundable, and the Court had no jurisdiction to stifle prosecutions for an event that killed thousands.

Why absolute liability was not applied — the doctrinally important part. Ranganath Misra CJ explained that a decree founded on a rule unknown to American jurisprudence risked being unenforceable in the United States, where UCC's assets were: "This, however, is not an occasion when such an experiment could have been undertaken to formulate the Mehta principle of strict liability at the eventual risk of ultimately losing the legal battle." The Court also observed that M.C. Mehta had itself been largely obiter. So the honest answer to "was absolute liability applied in Bhopal?" is no: it was cited, discussed, and set aside as too risky to rely on.

Why the curative petition failed in 2023. (1) A concluded settlement can be set aside only for fraud, and none was pleaded; the Union's case rested only on "number of victims, injuries and costs that were not contemplated at the time when the settlement was effected". (2) A "top-up" has no foundation in any known legal principle — either the settlement stands or it is set aside. (3) Finality matters; a curative petition is not a chance to renegotiate a compromise the Union itself made. (4) Payments had exceeded the compensation actually determined as due, and about Rs 50 crore still lay with the Reserve Bank of India, which the Court directed be used for pending claims under the 1985 Act. (5) The Union was rebuked for never taking out the insurance cover directed in 1991 — "gross negligence on the part of the Union of India".

The criminal case. In _Keshub Mahindra v State of M.P._ (Supreme Court, 13 September 1996) the accused — the chairman and senior officers of UCIL — had been charged under s. 304 Part II IPC (culpable homicide not amounting to murder, with knowledge that the act was likely to cause death), and under ss. 324, 326 and 429. The Court held that on the material produced at the charge-framing stage no charge under s. 304 Part II could be sustained, and directed that charges be reframed under s. 304A IPC — causing death by a rash or negligent act. The maximum punishment fell from ten years to two.

On 7 June 2010, twenty-six years after the disaster, the Chief Judicial Magistrate at Bhopal convicted the surviving accused — seven UCIL officers, an eighth having died during trial — under s. 304A and related provisions, sentencing each to two years' simple imprisonment and a fine of about Rs 1 lakh. All were bailed the same day. The CBI's curative petition to restore the graver charge was dismissed in May 2011. Warren Anderson, UCC's chairman, arrested and bailed in Bhopal in December 1984, left the country, was declared a proclaimed absconder and never faced trial.

The civil claims are now closed: the 2023 decision is the current and final position, and almost no textbook reflects it.