Perhaps in response to protests brought by employees and their advocates in recent years, states, counties, and cities across America have been increasing their minimum wage in piecemeal fashion. Few employers are fortunate enough to need worry about only one minimum wage—the federal minimum wage that is the floor below which employers may not go (unless an employer is not covered under the FLSA). Most large employers that operate in multiple states must now navigate a minimum-wage patchwork in which the hourly rate varies from state to state and, sometimes, between counties and cities.

Although the federal minimum wage is $7.25 per hour, 29 states and the District of Columbia have a minimum wage greater than the federal minimum wage. And those states are consistently increasing their minimum wage—New Jersey just passed legislation increasing its minimum wage from $8.38 per hour to $8.44 per hour, effective January 1, 2017, which is also when the Montana minimum wage will go from $8.05 to $8.15 per hour.

California is arguably the most difficult minimum-wage patchwork for employers to navigate. From a present minimum wage of $10 per hour, the California minimum wage will increase one dollar per hour each year until it reaches $15 per hour in 2022. But those increases also result in increasing the minimum salary that must be paid to employees who qualify for most overtime exemptions in California. Because most exempt employees in California must make at least twice the minimum wage on an annual basis, the current minimum salary for exempt employees who work for employers having more than 25 employees will increase from the present minimum of $41,600 per year to a minimum of $62,400 by 2022. (However, if the DOL’s rule goes into effect on December 1, 2016, requiring a new minimum salary of $47,476, then that will be the new floor below which employers may not pay their employees on a salary basis.)

In addition to minimum-wage increases on a statewide level, numerous California cities and counties have passed ordinances increasing their own minimum wages. From San Diego to Berkeley, the minimum wage in many cities has increased quicker than the state minimum wage. California’s minimum wage is presently $10.00 per hour. Employers in Santa Clara and Palo Alto, however, must pay their employees at least $11.00 per hour. Employees across the bay in Oakland must be paid at least $12.25 per hour. San Diego employers must pay their employees $10.50 per hour, as do Santa Monica employers that employ more than 25 employees.

California cities are not the only ones that have increased their minimum wage faster than their resident states. Employers in Albuquerque have had an $8.50 minimum wage since 2013, greater than the $7.50 required under New Mexico law. Similarly, Chicago has a $10.50 minimum wage, although Illinois mandates only $8.25. Seattle businesses that employ less than 500 persons must pay their employees $12.00 per hour, but Washington has a minimum wage of only $9.47.