Our Constitution provides protection against laws imposing criminal liability for actions committed prior to the enactment of the law. Article 20 (1) under the Part III (Fundamental Rights), reads: 20. (1) No person shall be convicted of any offence except for violation of a law in force at the time of the commission of the act charged as an offence, nor be subjected to a penalty greater than that which might have been inflicted under the law in force at the time of the commission of the offence. Thus, the maximum penalty that can be imposed on an offender cannot exceed those specified by the laws at the time. In the context of the Bhopal Gas tragedy in 1984, the Indian Penal Code (IPC) was the only relevant law specifying criminal liability for such incidents. The CBI, acting on behalf of the victims, filed charges against the accused under section 304 of the IPC (See Note 1). Section 304 deals with punishment for culpable homicide and requires intention of causing death. By a judgment dated September 13, 1996, the Supreme Court held that there was no material to show that “any of the accused had a knowledge that by operating the plant on that fateful night whereat such dangerous and highly volatile substance like MIC was stored they had the knowledge that by this very act itself they were likely to cause death of any human being.” The Supreme Court thus directed that the charges be re-framed under section 304A of the IPC (See Note 2). Section 304A deals with causing death by negligence and prescribes a maximum punishment of two years along with a fine. Consequently, the criminal liability of the accused lay outlined by section 304A of the IPC and they were tried accordingly. Civil liability, on the other hand, was adjudged by the Courts and allocated to the victims by way of monetary compensation. Soon after the Bhopal Gas tragedy, the Government proposed and passed a series of laws regulating the environment, prescribing safeguards and specifying penalties. These laws, among other things, filled the legislative lacunae that existed at the time of the incident. Given the current provisions (See Note 3), a Bhopal like incident will be tried in the National Green Tribunal (once operationalized) and most likely, under the provisions of the the Environment (Protection) Act, 1986. The criminal liability provisions of the Act (See Note 4) prescribe a maximum penalty of five years along with a fine of one lakh rupees. Further, if an offence is committed by a company, every person directly in charge and responsible will be deemed guilty, unless he proves that the offence was committed without his knowledge or that he had exercised all due diligence to prevent the commission of such an offence.
The civil liability will continue to be adjudged by the Courts and in proportion to the extent of damage unless specified separately by an Act of Parliament.
Notes 1) IPC, Section 304. Punishment for culpable homicide not amounting to murder Whoever commits culpable homicide not amounting to murder shall be punished with imprisonment for life, or imprisonment of either description for a term which may extend to ten years, and shall also be liable to fine, if the act by which the death is caused is done with the intention of causing death, or of causing such bodily injury as is likely to cause death, Or with imprisonment of either description for a term which may extend to ten years, or with fine, or with both, if the act is done with the knowledge that it is likely to cause death, but without any intention to cause death, or to cause such bodily injury as is likely to cause death. 2) IPC, Section 304A. Causing death by negligence Whoever causes the death of any person by doing any rash or negligent act not amounting to culpable homicide, shall be punished with imprisonment of either description for a term which may extend to two years, or with fine, or with both. 3) Major laws passed since 1984: 1986 - The Environment (Protection) Act authorized the central government to take measures to protect and improve environmental quality, set standards and inspect industrial units. It also laid down penalties for contravention of its provisions. 1991 - The Public Liability Insurance Act provided for public liability - insurance for the purpose of providing immediate relief to the persons affected by an accident while handling hazardous substances. 1997 - The National Environment Appellate Authority Act established to an appellate authority to hear appeals with respect to restriction of areas in which any industries, operations or processes are disallowed, subject to safeguards under the Environment (Protection) Act, 1986. 2009 - The National Green Tribunal Act, yet to be notified, provides for the establishment of a tribunal for expeditious disposal of cases relating to environmental protection and for giving relief and compensation for damages to persons and property. This Act also repeals the National Environment Appellate Authority Act, 1997. 4) Criminal liability provisions of the Environment Protection Act, 1986 Section 15. Penalty for contravention of the provisions of the Act (1) Whoever fails to comply with or contravenes any of the provisions of this Act, or the rules made or orders or directions issued thereunder, shall, in respect of each such failure or contravention, be punishable with imprisonment for a term which may extend to five years with fine which may extend to one lakh rupees, or with both, and in case the failure or contravention continues, with additional fine which may extend to five thousand rupees for every day during which such failure or contravention continues after the conviction for the first such failure or contravention. (2) If the failure or contravention referred to in sub-section (1) continues beyond a period of one year after the date of conviction, the offender shall be punishable with imprisonment for a term which may extend to seven years. Section 16. Offences by Companies (1) Where any offence under this Act has been committed by a company, every person who, at the time the offence was committed, was directly in charge of, and was responsible to, the company for the conduct of the business of the company, as well as the company, shall be deemed to be guilty of the offence and shall be liable to be proceeded against and punished accordingly: Provided that nothing contained in this sub-section shall render any such person liable to any punishment provided in this Act, if he proves that the offence was committed without his knowledge or that he exercised all due diligence to prevent the commission of such offence.
Recently, the President repromulgated the Securities Laws (Amendment) Ordinance, 2014, which expands the Securities and Exchange Board Act’s (SEBI) powers related to search and seizure and permits SEBI to enter into consent settlements. The President also promulgated the Scheduled Castes and the Scheduled Tribes (Prevention of Atrocities) Amendment Ordinance, 2014, which establishes special courts for the trial of offences against members of Scheduled Castes and Scheduled Tribes. With the promulgation of these two Ordinances, a total of 25 Ordinances have been promulgated during the term of the 15th Lok Sabha so far. Ordinances are temporary laws which can be issued by the President when Parliament is not in session. Ordinances are issued by the President based on the advice of the Union Cabinet. The purpose of Ordinances is to allow governments to take immediate legislative action if circumstances make it necessary to do so at a time when Parliament is not in session. Often though Ordinances are used by governments to pass legislation which is currently pending in Parliament, as was the case with the Food Security Ordinance last year. Governments also take the Ordinance route to address matters of public concern as was the case with the Criminal Law (Amendment) Ordinance, 2013, which was issued in response to the protests surrounding the Delhi gang rape incident. Since the beginning of the first Lok Sabha in 1952, 637 Ordinances have been promulgated. The graph below gives a breakdown of the number of Bills passed by each Lok Sabha since 1952, as well as the number of Ordinances promulgated during each Lok Sabha. 
Ordinance Making Power of the President The President has been empowered to promulgate Ordinances based on the advice of the central government under Article 123 of the Constitution. This legislative power is available to the President only when either of the two Houses of Parliament is not in session to enact laws. Additionally, the President cannot promulgate an Ordinance unless he ‘is satisfied’ that there are circumstances that require taking ‘immediate action’. Ordinances must be approved by Parliament within six weeks of reassembling or they shall cease to operate. They also cease to operate in case resolutions disapproving the Ordinance are passed by both Houses. History of Ordinances Ordinances were incorporated into the Constitution from Section 42 and 43 of the Government of India Act, 1935, which authorised the then Governor General to promulgate Ordinances ‘if circumstances exist which render it necessary for him to take immediate action’. Interestingly, most democracies including Britain, the United States of America, Australia and Canada do not have provisions similar to that of Ordinances in the Indian Constitution. The reason for an absence of such a provision is because legislatures in these countries meet year long. Ordinances became part of the Indian Constitution after much debate and discussion. Some Members of the Constituent Assembly emphasised that the Ordinance making power of the President was extraordinary and issuing of Ordinances could be interpreted as against constitutional morality. Some Members felt that Ordinances were a hindrance to personal freedom and a relic of foreign rule. Others argued that Ordinances should be left as a provision to be used only in the case of emergencies, for example, in the breakdown of State machinery. As a safeguard, Members argued that the provision that a session of Parliament must be held within 6 months of passing an Ordinance be added. Repromulgation of Ordinances Ordinances are only temporary laws as they must be approved by Parliament within six weeks of reassembling or they shall cease to operate. However, governments have promulgated some ordinances multiple times. For example, The Securities Laws (Amendment) Ordinance, 2014 was recently repromulgated for the third time during the term of the 15th Lok Sabha. Repromulgation of Ordinances raises questions about the legislative authority of the Parliament as the highest law making body. In the 1986 Supreme Court judgment of D.C. Wadhwa vs. State of Bihar, where the court was examining a case where a state government (under the authority of the Governor) continued to re-promulgate Ordinances, the Constitution Bench headed by Chief Justice P.N. Bhagwati observed: “The power to promulgate an Ordinance is essentially a power to be used to meet an extraordinary situation and it cannot be allowed to be "perverted to serve political ends". It is contrary to all democratic norms that the Executive should have the power to make a law, but in order to meet an emergent situation, this power is conferred on the Governor and an Ordinance issued by the Governor in exercise of this power must, therefore, of necessity be limited in point of time.” 
Thanks to Vinayak Rajesekhar for helping with research on this blog post.
