However, as of my last update, there was no nationwide law or regulation mandating menstrual leave in India.1
References
1Bhagyamma G. Navigating menstruation with disabilities: unique challenges and empowerment. Law and Social Policy Review. 1(1):132-139. https://lspr.iledu.in/navigating-menstruation-with-disabilities-unique-challenges-and-empowerment/