Everyone has a job!
The North Korean leadership takes great pride in highlighting the fact that there is zero unemployment and that every individual has a fulfilling job! However, performing what these girls do, which is using brooms made like they did in the 1500s to sweep dust off the street, would qualify as a “meaningful job” in North Korea.
Given that this government is notorious for lying about almost everything, perhaps we shouldn’t be too concerned about the unemployment rate.