He was appointed Member (Social Scientist) to the National Commission for Backward Classes (1993-6).

He is associated with Human Rights Movement and served as President of Delhi chapter of People's Union for Civil Liberties (PUCL) (1991-93).

Sheth has edited Citizens and Parties (1995); with Ashis Nandy, Multiverse of Democracy (1996) and with Gurpreet Mahajan Minorities Identities and the Nation State (1998).

He is editor of the journal Alternatives: Social Transformation and Humane Governance and a founder member of Lokayan: Dialogues of the People.

A political sociologist, he has made major contributions to the study of comparative politics, the politics of social issues and grassroots movements.