Mr. HAMAGUCHI Makoto
- Democratic Party For the People and The Shin-Ryokufukai
- Elected 2016 and 2022, Proportional Representation
- Current Responsibilities in the House of Councillors
（as of November 9,2026)
Committee on Health, Welfare and Labour
Committee on Budget
Born:
May 18, 1965, Mie Prefecture
Education:
1988 University of Tsukuba, Third Cluster of Colleges,
College of Policy and Planning Sciences
Career:
1988 joined Toyota Motor Corporation
1996 Full-time Officer, Toyota Motor Workers' Union
2008 Deputy General Secretary, Confederation of
Japan Automobile Workers' Unions (JAW)
2015 Special Central Executives Committee Member, JAW
2016 first elected to the Senate
2022 second elected to the Senate
(Major post in the Senate)
2025 Chairman, Committee on Economy and Industry
Note: The Sangiin, which had been known as the House of Councillors, is called the Senate in English as of August 2026.
(as of October 26,2026)