Worker Rescued From Collapsed Subway Construction Site After 13 Hours Underground South Korea 11714281

I'm trying to find a word or a short phrase that target such person. Like someone who has no passion, no drive and only does whatever needed to survive. I am reading human resource(hr) book, and i can not understand employee, staff and worker.

Is there a word that means something like someone who does the same job as me? I've thought of colleague and co-worker. These both indicate that someone works at the same place, or. Are these two words interchangeable? According to the oxford dictionary, experienced means having knowledge or skill in a particular job or activity, while seasoned having a lot of.