Critics of the minimum wage mandate, mainly ride-hailing companies, say that the proposal will make rides more expensive.
The program, a partnership between Uber and Getaround, launched for drivers in San Francisco in May.
Economists from New York City’s New School and the University of California, Berkeley proposed that drivers should be earning $17.22 an hour after expenses, a 22.5% increase based on average pay rates.
The lawsuit was brought against the company by drivers in California for alleged labor-code violations.
Uber is partnering with Enterprise Rent-A-Car on a car rental pilot program in Denver. Enterprise will provide rental cars to Uber drivers by the week or month.