OC & Associates HR Co.

OC & Associates HR Co. is a regulated professional services firm incorporated specifically to provide social insurance services. These are some of the services provided:

  • Company registration for social insurance (health and pension) and labor insurance plans
  • Filings for new hires, employee departures and change of names and addresses
  • Statutory report filings to the social insurance agencies
  • Applying for child-care and nursing care benefits, accident and sickness and/or maternity leave benefits
  • Declaration of workers’ compensation premiums and unemployment insurance premiums
  • Consulting on Social Security Totalization Agreement and Labor Law issues
  • Consulting and preparation of employee Work-rules, and “36” Overtime Labor agreement
  • Social insurance consulting for non–Japanese and Japanese expatriates
  • Representing the client on Labor Standards Bureau and Pension Office examinations

Managing Partners

Hiroko Hanato

Hiroko Hanato

CPTA (Japan), Certified Social Insurance and Labor Consultant (Japan)

Graduate of Ritsumeikan University. Member of the Tokyo Certified Public Tax Accountant Association and Tokyo Certified Social insurance and Labor Consultant Association. Provided accounting and payroll outsourcing services to foreign owned companies in the UK and Japan with Arthur Andersen, followed by OC & Associates. Becomes partner in 2000. Has the ability to advise companies on tax and social insurance matters for expats from both perspectives, as well as compliance with Japanese labor laws.


Firm name:
OC & Associates HR Co.

Date of incorporation:
June 21, 2016

Kioicho Building 17F, 3-12, Kioicho, Chiyoda-ku, Tokyo, 102-0094



Hiroko Hanato (CPTA #80982)

Other CPTA Professionals: