There are plenty of people on here who would complain if some young person they didn't know knocked on their door asking for work! (if they even answered it...).
My recently graduated DS is currently working 30-35 hours a week in a pub AND doing 2 days a week volunteering in a relevant field AND doing some GCSE tutoring and trying to set up his own business with a friend. However, the pub work took some finding, and I know plenty of young people struggling to find any work at all at the moment. Depending on where you live, it may not be easy at all.