#Japan #Chiyoda #Jun Ono #Social Insurance #Koyo Clean

Understanding Social Insurance Changes After Minimum Wage Increases

In recent discussions regarding wage adjustments, the impact of rising minimum wages has been significantly highlighted. The Koyo Clean Human Resources Association, located in Chiyoda, Tokyo, has recently launched an informative video to shed light on the intricate relationship between minimum wage increases and social insurance adjustments that may follow.

When the minimum wage is modified, it is expected for salaries of part-timers and hourly workers to be adjusted accordingly. However, adjusting just the hourly wage is not the end of the story. For part-time workers who are enrolled in social insurance, an increase in their hourly wage is considered a change in fixed compensation. This distinction is crucial, as it triggers additional administrative procedures.

A noteworthy consequence is that if the total salary, including overtime, rises for three consecutive months due to the increased hourly wage, the calculation basis for social insurance premiums, known as the 'standard monthly remuneration,' may change by two grades or more. In such cases, it becomes mandatory to submit a 'monthly change notification' to the relevant pension office. Essentially, employers must retain and review the salary history from the effective date of the minimum wage increase over the subsequent three months and, if applicable, expect alterations to social insurance premiums starting in the fourth month.

To navigate these complexities, Jun Ono, a designated social insurance and labor consultant at Koyo Clean, elucidates the criteria for determining when a monthly change is warranted, paired with critical checkpoints for human resource personnel to avoid any procedural oversights.

Video Summary of the Seminar

To facilitate an understanding of these changes, a summary video targeted at media professionals and corporate representatives has been made available on YouTube. This brief overview effectively captures the essence and key points of the discussed topics, ensuring viewers quickly grasp the implications of minimum wage increases and the associated requirements.

Individual Inquiry Sessions for Media and Corporations

For further insights and clarification on specific cases not fully covered in the video, Koyo Clean's in-house specialists are poised to address queries directly.

• - Date: September 18, 2026
• - Time: 12:00 PM - 6:00 PM (time may require adjustment for individual consultations)
• - Format: Phone or online sessions (either option is available)
• - Audience: Media professionals, corporate representatives
• - Cost: Free of charge
• - Registration: Please reach out to our office at [email protected] for inquiries.

FAQs Addressed

The inquiry session aims to address the following common concerns:

• - What happens if the increase in salary does not result in a two-grade difference in overtime?
• - How can one recover from forgetting to submit the monthly change notification, sometimes realizing it months later?
• - If 'standard determination notifications' coincide with monthly change notifications, which one takes precedence?
• - Tips for setting up payroll software to ensure that all individuals affected by monthly changes are accurately identified.

About Jun Ono

Jun Ono is a designated social insurance and labor consultant. With extensive experience, he has conducted over 400 seminars focusing on harassment and labor issues across various organizations, gaining a reputation for his practical approach to law application in real-world scenarios. He also supervises and lectures for the Employment Clean Planner certification program.

About Koyo Clean Human Resources Association

Founded in 2023 as a subsidiary of Company SA, Koyo Clean focuses on qualification and training projects aimed at employment, labor, and harassment prevention. Over 750 individuals have earned the 'Employment Clean Planner' certification, actively contributing across businesses, municipalities, and educational institutions.

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