: Was President, All Kerala Balajana Sakhyam (1961-62); President, K.S.U. (1967-69) and Youth Congress (1970-71); Was Member A.I.C.C.Served as Minister for Labour (11.4.1977 to 27.10.1978); Minister for Home (28.12.1981 to 17.3.1982); Minister for Finance (2.7.1991 to 22.6.1994); Chief Minister (31.08.2004-12.05.2006 and 18.05.2011-20.05.2016); Opposition Leader in the 12th KLA; U.D.F. Convener and President of various trade Unions.