This makes a lot of sense. A large business doesn't rely on the average employee. The employee relies on the business for food, shelter, healthcare...everything.

It's just an inherently large imbalance, and the only way it doesn't exist is if there is a shortage of employees in the sector and the ROI per employee is high. This is a pretty small percentage of jobs.

Unions are one way to try to curb exploitation, but I don't know how effective they are in practice. If retail workers tried to unionize what is to prevent the millions of people who are equally qualified from replacing the entire union?