Japan’s Supreme Court held Dentsu liable for an employee’s overwork suicide, expanding employer duty of care to mental health and limiting comparative negligence.

Japan’s Supreme Court (1966) held that consolation money for pain and suffering cannot reduce an employer’s statutory workers’ compensation, firmly separating financial and non‑financial damages.

Japan's top court limits workers' comp for specially enrolled owners to on‑site work covered by employee insurance, excluding sales and scouting trips.

Japan’s Supreme Court held that 18 months of extreme overtime outweighed mild hypertension, ruling a chauffeur’s 2000 stroke compensable and redefining overwork disease criteria.

Japan’s Supreme Court ruled that a fatal after‑party car accident was work‑related, clarifying how employer pressure and business‑oriented social events affect workers’ compensation eligibility.

Japan’s Supreme Court ruled that employers may invoke the Labour Standards Act termination‑compensation exception to dismiss workers on prolonged injury leave, even when WCAI benefits, not company payments, are being received.

Japan’s 1996 Supreme Court ruling explains why an owner‑operator truck driver was deemed an independent contractor, shaping today’s employee–contractor tests under Japanese labor law.

TL;DR Japan’s Supreme Court (Y Co. case, 1965) held that employees automatically acquire Health Insurance Act and Employees’ Pension Insurance Act coverage from their first day of work. The administrative “confirmation” merely validates that fact and retroactively relates back, so premiums and benefits both run from the employment