Real wages for tipped workers in Arizona have significantly progressed compared to the US. Prop 138 would gradually regress these wage gains.

Minimum wage for tipped workers in real 2023 dollars from 2004-2024

Inflation adjusted using the Consumer Price Index for All Urban Consumers
Chart: Arizona Center for Economic ProgressSource: US Department of Labor, Minimum Wages for Tipped Employees - Historical Tables Created with Datawrapper