The international worker may bring his immediate family members with them or their dependents – spouses and children under 21 years old who are unmarried. They will basically have the same restrictions as the principal. Spouses who are qualified may also apply for an H-4 visa.
The employers should provide the international worker housing and benefits, and should be paid based on the federal, local, or state minimum wage. It should be equal or higher than this. Finally, they can go in and out of the United States freely without any restrictions. A good H2B visa lawyer will help you understand the benefits you should get while your visa is active.