As a general rule, an H1B petition can be either part-time or full-time. “Full-time” generally means 40 hours per week, unless the company’s normal full-time employment is less than that. But a full-time employment cannot be less than 35 hours per week. On the other hand, “part-time” means anything less than “full-time.” However, there is no specified minimum hour requirement for a part-time H1B. Does this mean you can stay in the U.S. under H1B and work only 5 hours per week? Probably not. Even if your sponsoring company is willing to file such H1B for you, the USCIS will question your ability to pay for your living, and will probably doubt whether you are taking on other unauthorized employment. Therefore, the hours should be within a reasonable range, typically 15-30 hours per week.