Family members of the H-1B foreign worker are admitted to the United States in the H-4 category. Qualifying family members include only the spouse and unmarried children under 21 years old. H-4 dependents are admitted for the same period of time for which the H-1B foreign worker is admitted. H-4 dependents may alternatively be admitted in other nonimmigrant categories for which they qualify. H-4 dependents may undertake studies while remaining in the H-4 category, however, they may not engage in any form of employment.
Please visit my LinkedIn article posted this morning for a brief explanation on this issue:
https://www.linkedin.com/today/post/...?trk=prof-post
This question is raised often and debated much amongst lawyers focusing their practice on employment-based immigration. This morning, I have a call scheduled with a corporate client who is considering the legality of accepting a volunteer in their for-profit IT business.