#Japan #Tokyo #TUNAG for UNION #株式会社スタメン #Masaya Sakuragawa

Improving Labor Productivity: Free Online Seminar

On April 2, 2026, from 18:00-19:00 JST, a free online seminar will be hosted by STAMEN Co. (based in Chiyoda, Tokyo) featuring Honorary Professor Masaya Sakuragawa from Keio University. This seminar aims to provide insights into the fundamental aspects of labor productivity and its relationship with wages and employment.

Understanding Labor Productivity

The notion that enhancing labor productivity leads to increased employment and higher real wages is widely accepted—in fact, it is often viewed as a fundamental truth. However, when analyzed from an economic perspective, this concept is not as self-evident. This seminar will reexamine common theories surrounding labor productivity and delve deeper into the intricate connections between technological advancements, labor productivity, real wages, and employment.

Attendees will gain valuable insights to consider as they take the first steps towards improving the status of workers.

Who Should Attend?

This informative session is highly recommended for union executives, newly appointed officers, and union members. The program offers perspectives beneficial to individuals involved in labor unions, helping them navigate the complexities of labor productivity and its implications.

Seminar Program

The seminar will feature a presentation by Professor Sakuragawa, who will approach the topic from the viewpoints of macroeconomics and corporate behavior. Participants will engage in a thoughtful discussion about the structural challenges of productivity stagnation and explore the evolving dynamics of labor, wages, and investment in the years to come.

Event Details

• - Date: April 2, 2026 (Thursday)
• - Time: 18:00 to 19:00 JST
• - Format: Online
• - Cost: Free of charge
• - Registration: Please complete the required fields on the application form available at TUNAG for UNION Registration.
• - Note: Participation from competing companies is discouraged.

Speaker Introduction

Professor Masaya Sakuragawa

• - Title: Honorary Professor, Keio University
• - Background: Born in Fukui Prefecture in 1959. Completed his studies at the Faculty of Political Science and Economics at Waseda University. He has previously served as an assistant professor at Osaka University and a professor at Nagoya City University before taking the prestigious role at Keio University in 2003. An honorary professor since 2025, he holds a Ph.D. in economics from Osaka University.
• - Specializations: His expertise spans macroeconomics, monetary theory, and international finance.
• - Publications: His notable works include Economic Analysis of Financial Crises (2002), Theoretical Examination of a Financial Nation (2005), and Bubble Economics Theory (2021), the latter of which received multiple awards including the Nikkei Economic Book Culture Prize.

Takahiro Sasaki

• - Title: Specialist Executive, TUNAG for UNION, STAMEN Co.
• - Background: Previously served as a dedicated central executive secretary within a labor union and currently holds his position at TUNAG for UNION.
• - Speaker History: Has spoken at various platforms discussing strategies for enhancing union value and evolving associations.

About TUNAG for UNION

TUNAG for UNION is a vital app that consolidates necessary information for union activities. Launched in January 2022, it has been adopted by over 300 unions across diverse industries and sizes. The platform emphasizes not just the dissemination of information but ensuring it reaches each individual effectively.

Managing day-to-day activity updates, related applications and approvals, and visualizing members' reactions can all be accomplished seamlessly with TUNAG for UNION. By consolidating essential communication into a single app, it enhances accessibility for union members, making information relay and action items much simpler.

Support for the implementation process is offered by specialized personnel, catering to the specific challenges and objectives of each labor union.

For more information about TUNAG for UNION, visit their official site: TUNAG for UNION.

About STAMEN Co.

Founded in 2016, STAMEN Co. operates under the mission of delivering joy and spreading happiness to as many individuals as possible. Following steady business expansion, the company was listed in December 2020 and now offers several services such as TUNAG and cloud-based IT asset management tool Watchy.

• - CEO: Taihei Onishi
• - Headquarters: Chiyoda, Tokyo, Japan
• - Established: August 2016
• - Number of Employees: 171 as of June 2025
• - Stock Code: 4019
• - Official Website: STAMEN Co.