: Minister for Labour (28.12.1981 - 17.03.1982); Minister for Labour (24.05.1982 - 25.03.1987, Labour and Excise from 1986); Minister for Forests and Rural Development (20.04.1995 - 09.05.1996); Minister for Electricity (26.5.2001 - 11.2.2004); Minister for Health and Family Welfare (11.2.2004 - 29-08-2004); Deputy Leader, Congress Parliamentary Party; President, Progressive Students Union; Secretary, Kerala Provisional United Trade Union Congress (1977); participated in ILO Conference at Geneva representing Central Government in 1985