That might be legal in Texas, but in Washington it's explicitly illegal. In the state, tips are completely irrelevant to base pay, all employees must get paid at least minimum wage as base pay.
Instacart is going to get fucked very quickly by the Washington AG. This is as bad as Walmart not paying employees for overtime.
Instacart is going to get fucked very quickly by the Washington AG. This is as bad as Walmart not paying employees for overtime.