In my job as an IT professional in Japan, there were not many rules and a very relaxed environment. Even I'm working from home full-time with flex time and have the chance to work overseas for three months outside of Japan for every year. I believe IT sector employees can work freely in Japan compared to other sectors, especially in companies with multicultural backgrounds. However, we have fewer holidays. Approximately 10 days per year. Depending on the industry, these things may differ.