I'm not a native English speaker.
I remember having read an article comparing jobs according to how the worker accrue value over time, i.e. the more your work and acquire experience, the more valuable you are.
For ex. a knowledge worker = a software engineer will accrue a lot of experience over jobs. A manager as well, being exposed to a lot of work experience.
On the other hand, an employee selling shoes in a small shop or a waiter bringing food in a restaurant is accruing less experience benefits over time, or can even drop, for ex. a young waiter / seller being seen as more desirable.
I'm looking for words to describe this kind of difference in jobs, in order to find articles / research on this subject. I tried a lot of word combinations in search engines, without being able to find relevant articles or wikipedia pages.