Some of the limitations of H-2B visas are also similar to the limitations on H-1B visas. The worker is restricted to working only for the US employer who acted as the H-2B visas sponsor. If the worker wishes to change jobs, he/she must get a new H-2B visa. H-2B visas can initially be approved for up to only one year. Additional one-year extensions are allowed. After a maximum of three years, the worker must return home and wait at least 12 months before applying for another H-2B visa, unless the worker qualifies for another visa status. Accompanying relatives may stay in the US. with the H-2B worker, but they may not work.