Boku to Watashi to Inc., a planning and Emo Marketing® company focused on Gen Z, conducted a survey of 7,000 working adults from Gen Z and Millennials about attitudes toward side jobs. As Japan continues to promote side work at the policy level, including support for local government employees taking on side jobs in 2025 and revisions to the national civil servant side-job system scheduled for April 2026, the survey explored how younger generations actually approach side work. The survey found that just over 15% of both Gen Z and Millennials are currently doing side jobs. Including those who previously had side jobs but no longer do, about 30% of each generation has side-job experience, with no major generational gap. Side-job categories were diverse across both generations, including sales and customer service, social media, video, livestreaming and creative work, administrative work, document creation and data entry, as well as flea-market apps, e-commerce and handmade product sales. By generation, Gen Z showed a relatively higher share in public or community-related work, while Millennials had a higher share in medical and welfare-related work. Monthly side-job income was most commonly under 30,000 yen for both generations. Combined with those earning between 30,000 and under 50,000 yen per month, more than half earned under 50,000 yen monthly from side work. However, among Millennials, 24.8% earned between 50,000 and under 100,000 yen per month, five percentage points higher than Gen Z, suggesting a wider income range among Millennials. Among respondents who had stopped doing side jobs, the most common reason for both generations was that their main job was too busy and they did not have time to continue. For Gen Z, the second most common reason was that the income was too low for the effort involved, reflecting a strong awareness of time performance. For Millennials, the second most common reason was physical burden, suggesting that life stage affects the chall