Australia has relatively high youth unemployement, a predicted effect of a high minimum wage:
https://www.statista.com/statistics/811644/youth-unemploymen.... Having difficulty finding work after graduating high school or university is a common complaint among Australian youth, in my experience. The hardest part is getting the first job, getting the foot in the door, and this is because a minimum wage prevents many entry-level jobs from existing, where the value the positions would generate is much less than the minimum wage, so it makes no sense to create the positions.
>On the other hand, you can have no minimum wage, and end up with a class of working poor who have no time to educate themselves, thus condemning them to a life of constant work with no hope of social mobility.
The minimum wage can also create cycles of poverty by pricing people out of work. Some portion of the people who are "least hireable" are unable to get jobs because nobody would pay them $15/hour, so their only option is living permanently on welfare, which has a demoralising effect, and is associated with poor outcomes for their children. Imagine for instance the stereotypical Frankston junkie.