: S.N. College Union, Punalur: Magazine Editor (1982), Chairman (1983). Union Chairman (1986), Thiruvananthapuram M.G. College; Member (1992), Kerala University Syndicate. S.F.I.: President, Punalur Area (1985), Member (1985), President (1990) & Secretary (1991) of Kollam District committee, State President (1994), State Secretary (1995), All India President (1997). D.Y.F.I. All India President (2003). C.P.I.(M): Member (1998), State Committee, Secretary (2015), Kollam District, Member (2018), State Secretariat. Political Secretary to Former Chief Minister Shri. V. S. Achuthanandan (2006). Member of Parliament (Rajyasabha) (2010–2016); State Secretary, Kerala Karshaka Sangham (2019). Received ‘Sansad Ratna’ Award for Best Parliamentarian in India (2016).