Although I dont know the scope of this ordinance, remember that the states, not the feds, have the 10th Amendment-protected power to define intrastate minimum wage and overtime wage policy. (All that Constitutionally indefensible federal minimum wage amounts to is a vote-winner for corrupt federal politicians imo.)
Im glad that Seattle is experimenting with high minimum wage. Im sure that many people will be looking over Seattles shoulder to see what happens.
I would counter the 13th A., coupled with the Takings Clause prohibits the same.
I have yet to hear from the ‘esteemed black robed betters’ at just what % of gov’t confiscation does slavery kick in...IMHO, if one works for the benefit of another (welfare) by compulsion, that IS slavery as defined.