In May 2015, H4 Visa holders officially became eligible to work in the U.S.
If you wish to apply for an H4 Visa Work Permit, you first need to receive an Employment Authorization Document (EAD). To be eligible for the H4 EAD, you must be the spouse or child of an H-1B Visa holder. Dependents of other H kind visas holders cannot be granted the EAD;
The H4 EAD allows you to work in any field and any legal job. You do not need an active employment offer, and you can start seeking a job only after you get the authorization. You are also allowed to start your own business and employ U.S. workers.
This status can be renewed as long as your family member maintains an H-1B status. If you wish to remain in the U.S. after this, you will need to apply for a different visa.
To get an H4 EAD to work in the U.S., you must file a Form I-765 and pay a fee of $410. Once again, you will be asked to provide evidence of your relationship with the H visa holder.
The H4 Visa EAD processing time is usually 90 days. Unfortunately, this permit is not eligible for premium processing, so you cannot pay to get a quicker response.