There are all kinds of jobs not worth the minimum wage of $7.25, and we should abolish it forwith. Youth employment would surge, as would respect for a dollar and the value of capitalism. Maybe that's why liberalism keeps raising the minimum wage.
US teenagers used to do those jobs, and gained the valuable work experience and good habits employers look for in adults but often do not find any longer.
In the United States children who have reached 14 years of age may work limited hours in many jobs.
There are an estimated 24 million kids aged 14 through 19.
In July 2016 just 6 million aged 16 through 19 were employed, about 38% of that slice of teenagers.
[A]t least 8 million unauthorized immigrants are employed, most have been in this country for 15 years or longer, and typically they do jobs — tending crops, washing dishes, mowing lawns — that native-born Americans do not want. In basic economic terms, illegal immigrants meet the labor market’s demand for lower-wage employees, for which there is a shortage of available legal workers.