@josephmartin
My dear friend if you have read Indian constitution then you will get your answer.
equal pay for equal work is included in state duty. Directive Principles of StatePolicy Article 39 (c)
Govt may try to implement this steps but they are not answerable to court .I mean if the govt. are not working properly you are not take action against govt. for this.
some difficulties faced by courts in applying the said principle:
There are several difficulties that courts in India face when comparing and evaluating the work of different people in different organizations or even in the same organization.
The quality of work produced by two people in the same organization is different. For the same reason, applying this principle of equal pay for equal work is difficult. The party making the claim has to prove that all things are equal but proof is usually not measurable in courts.
No material is provided to the courts to prove that there is a substantial claim for relief based on the duties of the twin categories, those who are asking for equal pay and those who are alleged to be already having equal pay.