#Social Insurance #Part-Time Work #Employment Agreement

New Social Insurance Cost Support System

Starting October 1, 2026, a transformative initiative called the Social Insurance Cost Support System will be introduced to mitigate the issue of part-time workers reducing their working hours due to decreased take-home pay. This initiative has been championed by the Claire Human Resources Education Association, based in Chiyoda, Tokyo, and aims to address the pressing challenge many businesses face in retaining part-time employees.

The Challenge Addressed

As more businesses extend social insurance coverage, a critical concern has emerged: many part-time employees are hesitant to work additional hours because the deductions for social insurance reduce their net income. This leads to a labor shortage that many companies can ill afford. The new support system is designed as a timely intervention to resolve this dilemma.

How the System Works

The Social Insurance Cost Support System changes the traditional burden-sharing ratio of social insurance premiums for part-time workers, who meet certain criteria, such as working over 20 hours a week but earning less than 130,000 yen monthly. Under this program, companies will temporarily increase their share of social insurance costs, thereby relieving employees of some of their financial burdens and preventing a decline in their take-home pay. After a specified period, the amount temporarily covered will be deducted from the premium contributions, creating a cushion for businesses as they adapt to these new responsibilities.

Impediments to Implementation

While this system presents a significant opportunity for businesses to support their part-time workforce, there are practical barriers to consider. To benefit from the system upon its launch, employers must become what is termed an “optional specified applying business” in line with labor-management agreements. This requirement necessitates obtaining consent from more than half of the eligible part-time workers, followed by submitting a request form to the relevant pension office. Jun Ono, a designated social insurance labor consultant and an expert in the complexities of social insurance contributions, will guide businesses through this intricate process.

Educational Opportunities

Yoko, the Claire Human Resources Education Association has released a summary video for media and corporate stakeholders, accessible on YouTube, that outlines the key aspects of this new system. This resource is particularly valuable for those seeking to grasp the essentials quickly.

Additionally, the association is offering a free Q&A session for media representatives and corporate personnel on August 31, 2026, from 12:00 to 18:00, where specific inquiries can be addressed. Attendees will have the option of attending via phone or online at their convenience.

Common Questions Addressed

Participants may bring their curiosities regarding various aspects of the implementation process, such as:

• - How the burden-sharing ratio will adjust for both the company and employees over three years after the system rolls out.
• - Effective methods for communicating potential drawbacks to employees when seeking consent from more than half of the part-time workers.
• - Clarification on the coverage period for newly hired part-time workers once the system launches.
• - Suggested timelines for submitting essential documents like the