I was reading about the seniority system here and am still not fully grasping it all. Is your ability to move up based solely on years of service? I read about how when positions open and how you can bid for them and what not. But what allows you to occupy that particular position comes back to seniority correct?
In regards to my first question, is performance a consideration? What goes into the whole process?
If it is strictly seniority, why is this viewed as the best approach? For example, in other industries you can move up based on performance or other various things that may separate yourself from the rest of the pack. What are the main benefits of this system?