Impact of Japan's 2024 Physician Work Style Reform on Pediatricians' Working Hours and Associated Factors.

Long working hours among pediatricians negatively affect their health and patient safety. In Japan, the Ministry of Health, Labour and Welfare launched the "Work Style Reform for Physicians" in 2024. However, whether these reforms have effectively reduced pediatricians' working hours remains unclear. We surveyed pediatricians and pediatric residents working in hospital pediatric departments to assess whether the reform has reduced their long working hours. A questionnaire was distributed to pediatricians in hospitals, collecting data on demographics, working hours, night shifts, and other working conditions. A multivariate logistic regression analysis identified factors associated with working ≥60 and ≥80 h on a weekly basis. Questionnaires were sent to 835 hospitals, with valid responses from 815 pediatricians across 316 hospitals. Among them, 31.7% worked 50-60 h per week, 18.4% worked 60-70 h, 7.7% worked 70-80 h, and 4.9% worked >80 h. Factors associated with working >60 h included being <30 years old and working in a department with five or more physicians. Pediatricians working >80 h were more likely to have a cardiology subspecialty and work in a department with five or more physicians. Although the "Work Style Reform for Physicians" has reduced long working hours among pediatricians, many still experience excessive workloads.