Leftists are always liars, because an increase in the minimum wage increases (teenage) unemployment by destroying entry level jobs and forces the unemployed onto welfare and the job black market, which is often a pathway to criminal activity.
A partial solution would be a training wage for new hires, to be increased to minimum or prevailing when the candidate has demonstrated competency. But of course, since it would require meeting a standard, that would be called RAAACISST!