I work in a public sector organisation. My job involves extensive touring of areas allotted to me. Can I opt voluntarily for tour on Sundays / National holidays, without claiming any extra payment / leave for such work undertaken on Sundays / Holidays? Is there any Act / provision of law that bars an employee opting voluntarily to work on Sundays / holidays? Can an employer accept such a request from employees without atracting any penal action from authorities? I am from the State of Tamil Nadu. Kindly clarify.