I understand what OP means, for this issue: considering the example above of your story, that worker can accept for the sake of food and clothing or for the sake of family life or children that he chooses a job to earn money that he does not like or does not have the time and necessary conditions. Even in my country, university graduates cannot find a job in their major, and life forces them to choose another profession to earn a living. That is a forced choice. On the contrary, if that worker chooses a job that is not interesting but has a better salary than their favorite job, it means that the worker chooses and accepts their opportunity to earn money, basically going to work to earn money.
In ancient times, the term "worker" didn’t even exist; there were only slaves. But these days, slaves is not the right term for workers. Maybe some people consider themselves slaves who grind away at jobs they don’t love simply because they have no other options, all in the name of putting food on the table for their families.
But in today’s world, it's different. Most people have access to education and knowledge, and there are laws in place to protect workers’ rights. This is the reason why we strive to study hard in order to get good jobs and make some money because we don't want to work just to survive for the rest of our lives!