Yamato Kankyo, with Zero Turnover for Over 10 Years, Abolishes Paper Daily Reports with TUNAG, Achieving Annual Cost Reduction of 2 Million Yen

Stamen Co., Ltd. (Headquarters: Chiyoda-ku, Tokyo; President and CEO: Taihei Onishi; hereinafter "the Company"), which develops and provides the employee experience platform "TUNAG," announced the publication of a case study on the use of "TUNAG" at Yamato Kankyo Co., Ltd. (Headquarters: Saga City, Saga Prefecture; President and CEO: Masakazu Makise; hereinafter "Yamato Kankyo"), an infrastructure service company primarily involved in the water supply business.

Through the introduction of TUNAG, the company has promoted digitalization and operational efficiency at the worksite, achieving an annual cost reduction of approximately 2 million yen while also improving organizational engagement.

Background of Introduction | The Vast Costs Incurred by Handwritten Daily Reports and Seal Stamping

While Yamato Kankyo has maintained a high employee retention rate with zero turnover for over 10 years and a paid leave usage rate of 98% since its founding over 60 years ago, it faced challenges with the "prevalence of analog procedures" in its field operations.

In particular, all daily reports were managed on paper, requiring employees to fill them out after returning to the office and then have multiple supervisors sequentially stamp their seals. It was discovered that overtime after returning to the office was occurring solely for waiting for these stamps and related clerical work, resulting in an annual waste of approximately 2 million yen in labor and paper costs. Additionally, the removal of the traditional in-house bulletin board due to office renovation prompted the company to consider building an environment where information could be received in real-time on individual devices, leading to the adoption of TUNAG.

Initiatives Built with "TUNAG"

The company utilizes TUNAG as a communication foundation that all staff, including veteran employees in their 50s and 60s who are less familiar with IT tools, can use without confusion, implementing the following initiatives:

Complete Digitalization of Daily Reports and Operation Logs via Smartphone

The company provided company smartphones to all employees and completely migrated the input of daily reports and operation logs to TUNAG. By utilizing a function to copy previously entered content, an environment was established where input can be completed in a few minutes during spare time.

Furthermore, managers can now instantly approve (replacing seal stamps) from their smartphones even when out of the office, significantly reducing the time spent waiting for stamps and associated overtime.

Optimization of Personnel Allocation through Cross-Departmental "Training Report" Publication

Daily reports from training that new employees undergo across multiple departments are managed with settings allowing all managers to view them. This has streamlined on-site coordination and, by enabling real-time tracking of individual aptitude and growth, serves as a basis for determining placement.

Direct Delivery of Management's Thoughts and Vision through Executive Messages

The president, who is often out on business, and the management team, who primarily work remotely, directly communicate their current thoughts to the field. They have consistently conveyed the vision formulated for the company's 60th anniversary: "We are a town-building company." This has led to daily conversations and decision-making among field employees based on this policy, improving information transparency and a sense of unity.

Results After Introduction | Overtime Over 20 Hours a Month Plummets to Under 30 Minutes, Vision Becomes Spontaneous Words

As a result of combining the introduction of TUNAG with other operational improvements, the average monthly overtime per person, which was 20 to 25 hours, has now drastically decreased to under 30 minutes for almost all employees. Managers no longer need to come to work early just for stamping seals, achieving a significant reduction in burden.

As a qualitative outcome, the vision of being a "town-building company," consistently communicated by management, has deeply permeated the workplace. A change has emerged where employees engage in conversations, saying things like, "We are a town-building company, so we have to make this kind of move," treating the company's future as their own.

Comment from Mr. Nishijima, Management Strategy Department, Yamato Kankyo Co., Ltd.

"I was deeply moved when I heard the feelings we had been consistently communicating becoming established in the employees' own words. Bonds across departments have deepened further, with comments on daily reports becoming topics of conversation in the workplace the next day."

"In the future, we plan to consolidate manuals and build an internal testing system on TUNAG to standardize education."

"Ultimately, we want to create a 'self-driving culture' where improvement ideas emerge from the field one after another without detailed instructions from management. TUNAG is an indispensable infrastructure for connecting the company and its people and supporting that future."

About TUNAG

TUNAG is an integrated platform aimed at improving organizational productivity and reducing turnover rates by promoting internal communication and information sharing. As of June 2026, it has been adopted by over 1,400 companies and has surpassed 1.5 million users.

Unlike traditional engagement initiatives that often focus on surveys, analysis, and diagnosis, TUNAG is a practice-support product. Its features, linked to daily actions such as internal social networking, recognition, and system management, guide the resolution of organizational issues through concrete actions.

Furthermore, its design and UI, which are easily accessible to non-desk workers, achieve high usage rates even in remote environments and companies with multiple locations. A major strength of TUNAG is its ability to consistently support not just surveys but also the cultivation of organizational culture, such as "connections" and "cycles of gratitude."

▼ What TUNAG Can Do (Partial Introduction)

Company announcements / Web internal newsletter / President's message / Thank you messages / 1on1 meetings / Daily reports / Internal points / Employee profiles & self-introductions / Internal awards / Training & manuals / Internal educational tests / Organizational diagnosis, etc.

■ Request for Materials: https://go.tunag.jp/l/900371/2024-10-07/k9gd7

■ Official Website: https://biz.tunag.jp/

■ Case Studies: https://biz.tunag.jp/case

About Stamen Co., Ltd.

Founded in 2016 with the management philosophy of "Delivering excitement and spreading happiness to as many people as possible." The company went public on the Tokyo Stock Exchange in December 2020 following steady business expansion. It operates multiple services, including "TUNAG" in the HR Tech field and "Watchy," a cloud-based IT asset management and operation log management tool.

Company Name: Stamen Co., Ltd.

Representative: Taihei Onishi, President and CEO

Tokyo Headquarters: 5F, Bancho Kojimachi Building, 6-6-2 Kojimachi, Chiyoda-ku, Tokyo

Nagoya Headquarters: 1-14-8 Shimohiroi-cho, Nakamura-ku, Nagoya, Aichi

Business: TUNAG https://biz.tunag.jp/

Watchy https://watchy.biz/

Founded: August 2016

Number of Employees: 216 (consolidated full-time employees as of end of March 2026)

Securities Code: 4019

URL: https://stmn.co.jp/