How long may an international citizen stay and work in the United States with an H-1B Visa?

The period of sojourn with the H-1B Visa is three years, nonetheless, in numerous situations it may be prolonged for an additional three years. Upon the completion of the utmost span of six years, the international citizen must depart and remain outside of the United States for a complete year before a petition for a second H-1B Visa may be endorsed.