I've got a major case of burnout. By the end of last year I was feeling imprisoned in my classroom. Even if you had 22 children, some of them would be at least 15 years older than the rest and be helping out. If this supervisor needs to get some perspective, there's no law against walking around the block and getting a cup of coffee. They design all the training programs, create or find the materials, and do the training for all 22 workers.
Teachers do all the filing, all the correspondence, and all the quarterly reports by themselves.
AND they break up fights, help the workers keep track of their personal belongings, consult with employees' families and their own supervisors about how the training program is going, and try to maintain an atmosphere of high morale and community in the workplace. If you need to go the bathroom you can't unless you can get someone to step into your spot on the line. At least factory workers, or people who stock shelves at Ames, get a coffee break. Alas, not to teachers. Thank goodness our union is working to address these issues.