As with most US states, Oregon has "at-will" employment, meaning that employees without an employment contract can be terminated for any reason, as long as it is not illegal. If an employee has a contract, he or she can only be terminated for reasons described in the contract. In 2007, Oregon enacted a law that requires breaks for nursing mothers. Employers must provide "reasonable rest periods" (thirty minutes per four-hour work period taken in the middle of the work day) to accommodate an employee who needs to express milk for her child eighteen months old or younger. Most employers in Oregon are covered by federal and state laws. When federal and state laws differ, however, the law most beneficial to the employee must be followed. For example, the federal minimum wage is $5.15 per hour, but the minimum wage in Oregon is $7.80. so the employee must be paid the higher wage.