The best organization I ever had the pleasure of dealing with had a very interesting and workable seniority list workplace agreement.
In times of RIN or basically downsizing the rule was simple, one from the bottom of the list followed by one from the top. repeat.
To be honest it worked very well, everybody looked after each other, if it became a choice between lowering costs or losing people guess what, usually everyone kept their job. Crew churn was lower, no BS work practices where argued over because when the time came a young sprog was always closely followed by and old salt. The guys in the middle with families were generally safe but to busy looking after the family as opposed to ether end that were busy looking after themselves.
It defeated any cockpit gradient and them and us attitude, it kept the corporate knowledge intact, it gave most guys a clear direction. Dickheads were not tolerated and usually worked their way out of the system because everyone knew that working together was the only realistic way when both ends of the sausage gets trimmed as opposed only the fresh end.