[1] Tamura started his career at the family-run construction company Nippon Doken Co. in Tsu, Mie, in 1987.

Next, he began to work as a secretary of his uncle, Hajime Tamura, who served as a member of the House of Representatives and as Speaker.

[1] Tamura was elected to the lower house for the first time in 1996, taking his uncle's seat.

[3] He was appointed vice internal affairs minister in the first cabinet of Shinzo Abe in 2006.

[1] He headed the committee of health, labor and welfare in the lower house during the prime ministry of Taro Aso.