Since it was last re-set on July 24, 2009, the federal minimum wage in the United States has been $7.25 per hour. Some U.S. territories (such as American Samoa) are exempt. Some types of labor are also exempt: employers may pay tipped labor a minimum of $2.13 per hour, as long as the hourly wage plus tip income equals at least the minimum wage. Persons under the age of 20 may be paid $4.25 an hour for the first 90 calendar days of employment (sometimes known as a youth, teen, or training wage) unless a higher state minimum exists
