Dear Amit,
It depends up on the factual legal position as to which government is designated as the "Appropriate Government" under the particular enactment applicable to your industrial establishment. As you are aware, Labour is a subject-matter of the concurrent list of the Constitution enabling both the Central and State Governments to legislate appropriate Laws. The term " Appropriate Govt" specifically mentioned in certain Labour Legislations enacted by the Central Govt. refers to the "Government" vested with the responsibility of administration/enforcement of the concerned Laws over certain establishments by virtue of their constitution or specific activity or location. For example, the Industrial Employment ( Standing Orders) Act,1946, the Industrial Disputes Act,1947, the Contract Labour ( Regulation & Abolition ) Act,1970, the Payment of Gratuity Act,1972, the Equal Remuneration Act, 1976 the term appropriate govt is defined. For the sake of quick and easy understanding, if an industrial establishment is created by a specific Central Legislation or it is a Central Govt undertaking, the app. govt to that establishment is the Central Govt - eg., Indian Railways, L.I.C of India, Unit Trust of India, BHEL, BEL, Nationalised Banks etc. The next criterion is with reference to the specific activity such as Postal and Tele-communications, mining, exploration of oils and minerals etc; yet another criterion is with reference to territorial jurisdiction of administration - eg., establishments situated in Union territories. For all other establishments it is the State Govts within whose territorial jurisdiction thay are functioning.