The city council approved a new law Tuesday that would make ride-share companies such as Uber and Lyft pay their drivers the $16 minimum hourly wage.
The measure uses a formula for drivers' compensation so they will be paid fairly when they're less busy.
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Under the new law, drivers will get an hourly pay of $30 before expenses.
The pay increase is supposed to incentivize Uber and Lyft to keep their drivers busy with passengers instead of flooding the city with more cars.
The law is modeled after a similar one in New York, which was the first city to pass such a measure.
In a recent letter, Uber said New York's policy resulted in fewer rides and higher prices for passengers.
Lyft called Seattle's plan flawed and said it would destroy jobs.