After graduating he began working in the secretariat of the Association for Traffic Accident Orphans, which Tamai founded.

[3] Fujimura's impetus for going into politics came after Morihiro Hosokawa approached Yoshiomi Tamai about running for the Japan New Party in the 1993 election.

He was moved to Senior Vice Minister of Health, Labour and Welfare in the September reshuffle.

[2][3] In the DPJ leadership election to succeed Naoto Kan in August 2011, Fujimura served as campaign manager for Yoshihiko Noda.

When Noda was elected and became prime minister the following month Fujimura was appointed as Chief Cabinet Secretary.