Division of Labor and Non-trading Sector in Oligopolistic General Equilibrium

• Project/Area Number: 15H06059
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Economic policy
• Research Institution: Yamagata University
• Principal Investigator: Kamei Keita 山形大学, 人文学部, 講師 (60756526)
• Project Period (FY): 2015-08-28 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000); Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
• Keywords: 貿易自由化 / 企業内分業 / 企業生産性 / 非貿易財部門 / 部分的開放政策 / 寡占的一般均衡 / 国際貿易 / 不完全競争 / 分業

Outline of Final Research Achievements

We investigate how trade liberalization affects firm productivity using a general oligopolistic equilibrium model with division of labor. We analyze the impact of both tariff reduction and a decrease in the number of non-trading sectors on firm productivity and welfare.
We obtain the following results:(1) A decrease in the tariff rate and an increase in the number of trading sectors increase wage rate.(2) A decrease in tariff rate reduces firm productivity of non-trading sectors and increases firm productivity of trading sectors. (3) An increase in the number of trading sectors decreases firm productivity of both non-trading sectors and trading sectors. However, it increases the firm productivity of the newly trading sectors.

Research Products

• [Journal Article] Competition Policy at the Intensive and Extensive Margins in General Equilibrium (2016)
  • Author(s): Kenji Fujiwara, Keita Kamei
  • Journal Title: KIER Discussion Paper series Volume: 954 Pages: 1-17
  • Acknowledgement Compliant
• [Journal Article] Trade Liberalization, Division of Labor and Welfare under Oligopoly (2016)
  • Author(s): Kenji Fujiwara, Keita Kamei
  • Journal Title: KIER Discussion Paper series Volume: 949 Pages: 1-18
  • Acknowledgement Compliant
• [Journal Article] Agricultural Productivity, Infrastructures, and the Optimal Timing of Opening Trade (2016)
  • Author(s): Keita Kamei, Hiroaki Sasaki
  • Journal Title: The Manchester School Volume: 84(5) Issue: 5 Pages: 621-641
  • DOI: 10.1111/manc.12125
  • Peer Reviewed
• [Presentation] Trade Liberalization, Division of Labor and Welfare under Oligopoly (2017)
  • Author(s): 亀井慶太
  • Organizer: 山形ワークショップ
  • Place of Presentation: 山形大学
• [Presentation] Trade Liberalization, Division of Labor and Welfare under Oligopoly (2017)
  • Author(s): 亀井慶太
  • Organizer: 京都大学経済研究所 共同研究プロジェクト研究会
  • Place of Presentation: 関西学院大学
• [Presentation] Trade Liberalization, Unemployment and Unionized Oligopoly in a General Equilibrium (2016)
  • Author(s): 亀井慶太
  • Organizer: 国際経済と経済成長・マクロ経済学に関する山形ワークショップ
  • Place of Presentation: 山形大学
  • Year and Date: 2016-03-09
• [Presentation] Trade Liberalization and Unemployment in Unionized General Oligopolistic Equilibrium (2016)
  • Author(s): 亀井慶太
  • Organizer: 日本国際経済学会
  • Place of Presentation: 中京大学
• [Presentation] Unemployment and Non-tradable Goods in a Unionized Oligopoly (2015)
  • Author(s): 亀井慶太
  • Organizer: 共同研究プロジェクト研究会
  • Place of Presentation: 高知工科大学
  • Year and Date: 2015-10-11