 The main market of Rosera is the Mahavir Chowk on the Station Road, and a jewellery market from Mahavir Chowk to Purani Chok has many jewellery shops.In the 2015 state assembly elections, Dr. Ashok Ram won from congress parti in collaboration with mahagathbandhan and defeated Manju Hajari with a huge number of votes.In the 2010 state assembly elections, Manju Hajari of BJP won the Rosera seat defeating her nearest rival Pitamber Paswan of RJD.