Approximately 800,000 non-immigrant temporary US work visas are issued yearly to permit foreign workers and their family members to live in the United States for a specified length of time. How long a temporary US work visa is valid for can range from up to one year to five years and is based on the US visa category (for example, H-Visa, L-Visa, O-Visa, etc.) and other variables (such as the length of a US employment contract). Many temporary US work visas can also be renewed. A temporary foreign worker can normally choose where to live in America, but this will depend on where they find US job opportunities and if employer sponsorship is required.