One Career Obtains Next-Generation Certification Mark 'Kurumin'
One Career Inc. has received the 'Kurumin' certification from the Ministry of Health, Labour and Welfare for its proactive support for employees raising children, achieving high childcare leave rates of 100% for women and 75% for men.
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- 📰 Published: April 28, 2026 at 20:00
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One Career Inc. (Headquarters: Shibuya-ku, Tokyo; President and CEO: Naoyuki Miyashita; hereinafter "One Career"), operator of a career data platform business, has obtained the "Kurumin" certification from the Ministry of Health, Labour and Welfare as a company actively engaged in supporting child-rearing.
## About the "Kurumin" Certification
"Kurumin" is a certification system by the Ministry of Health, Labour and Welfare based on the Act on Advancement of Measures to Support Raising Next-Generation Children. It recognizes companies that formulate and implement action plans to support their employees' child-rearing and meet specific requirements. (*1)
*1 Ministry of Health, Labour and Welfare: "About Kurumin, Platinum Kurumin, and Tri-Kurumin Marks"
## Initiatives for Balancing Work and Child-Rearing
Under the mission of "Creating as many careers as there are people," One Career operates a career data platform business providing data for job selection. This mission is not only the company's business principle but also the foundation for building an organization that continues to pursue the career potential of each employee.
To embody this within the company, we believe it is essential to create a workplace environment where every employee can choose flexible working styles according to their life stage and succeed in the long term. Therefore, the company has introduced flexible working systems, such as flextime and remote work, to realize diverse working styles.
As a result of these efforts, we have achieved a childcare leave rate of 100% for women and 75% for men (*2) as of the end of December 2025, leading to improved effectiveness of the systems and talent retention.
*2 Performance as of the end of December 2025
## Future Developments
Taking the acquisition of the "Kurumin" certification as an opportunity, we will further commit to creating an environment where every employee can maximize their potential. We will continue to accelerate business growth toward realizing our mission through an environment where people can continue to take on challenges regardless of changes in their life stages.
## About One Career's Initiatives for "People"
Our approach and initiatives regarding "People" are detailed in the "People & Culture Report 2026." Please take a look.
## Company Overview
One Career Inc. operates three services as a platform where individuals and companies can utilize all kinds of data regarding job selection under the mission of "Creating as many careers as there are people."
- Job hunting support service "One Career" (Student version)
- New graduate recruitment service "One Career" (Enterprise version)
- Career change support service / Mid-career recruitment service "One Career Tenshoku"
Company Name: ONE CAREER Inc.
Location: 16F Shibuya Infoss Tower, 20-1 Sakuragaoka-cho, Shibuya-ku, Tokyo
Established: August 18, 2015
Representative: Naoyuki Miyashita, President & CEO
Business Description: Career Data Platform Business (Recruitment DX support services, etc.)
Stock Code: 4377 (TSE Growth)
Corporate Site: https://onecareer.co.jp/
## About the "Kurumin" Certification
"Kurumin" is a certification system by the Ministry of Health, Labour and Welfare based on the Act on Advancement of Measures to Support Raising Next-Generation Children. It recognizes companies that formulate and implement action plans to support their employees' child-rearing and meet specific requirements. (*1)
*1 Ministry of Health, Labour and Welfare: "About Kurumin, Platinum Kurumin, and Tri-Kurumin Marks"
## Initiatives for Balancing Work and Child-Rearing
Under the mission of "Creating as many careers as there are people," One Career operates a career data platform business providing data for job selection. This mission is not only the company's business principle but also the foundation for building an organization that continues to pursue the career potential of each employee.
To embody this within the company, we believe it is essential to create a workplace environment where every employee can choose flexible working styles according to their life stage and succeed in the long term. Therefore, the company has introduced flexible working systems, such as flextime and remote work, to realize diverse working styles.
As a result of these efforts, we have achieved a childcare leave rate of 100% for women and 75% for men (*2) as of the end of December 2025, leading to improved effectiveness of the systems and talent retention.
*2 Performance as of the end of December 2025
## Future Developments
Taking the acquisition of the "Kurumin" certification as an opportunity, we will further commit to creating an environment where every employee can maximize their potential. We will continue to accelerate business growth toward realizing our mission through an environment where people can continue to take on challenges regardless of changes in their life stages.
## About One Career's Initiatives for "People"
Our approach and initiatives regarding "People" are detailed in the "People & Culture Report 2026." Please take a look.
## Company Overview
One Career Inc. operates three services as a platform where individuals and companies can utilize all kinds of data regarding job selection under the mission of "Creating as many careers as there are people."
- Job hunting support service "One Career" (Student version)
- New graduate recruitment service "One Career" (Enterprise version)
- Career change support service / Mid-career recruitment service "One Career Tenshoku"
Company Name: ONE CAREER Inc.
Location: 16F Shibuya Infoss Tower, 20-1 Sakuragaoka-cho, Shibuya-ku, Tokyo
Established: August 18, 2015
Representative: Naoyuki Miyashita, President & CEO
Business Description: Career Data Platform Business (Recruitment DX support services, etc.)
Stock Code: 4377 (TSE Growth)
Corporate Site: https://onecareer.co.jp/