OpenWork Inc. (5139.T) operates a working data platform business in Japan, providing employee review-based services for job matching, recruitment, and organizational analytics. Founded in 2007 and headquartered in Shibuya-ku, Tokyo, the company offers core products including OpenWork, a leading platform aggregating over 10 million company reviews, salary data, overtime hours, and evaluation scores for job seekers and employers; OpenWork Recruiting, a success-based scouting service enabling companies to send direct offers using review insights; and Job Satisfaction LAB, which delivers quantitative and qualitative research reports on workplace trends. It also provides organizational management tools for PDCA cycle support, competitor analysis, and alternative data for financial markets and ESG investing, primarily serving Japanese listed companies, job seekers, hedge funds, and HR professionals through its proprietary database. As a subsidiary of Link and Motivation Inc., OpenWork maintains offices in Tokyo and Osaka, focusing on the domestic market with expansion into human capital analytics. The company reports strong financial performance, with revenue of JPY 4.11 billion and net income of JPY 1.01 billion in the latest trailing twelve months, alongside 28% net income growth over five years driven by high earnings retention. In recent developments, OpenWork sustains robust stock momentum with a 39% share price rally over three months as of mid-2025, reflecting efficient management and reinvestment strategies amid Japan's SaaS sector growth.