Where do you suppose the “last hired, frst fred” rule came from?

Could you speculate as to what its original purpose may have been?

Do you believe it is a just rule? If you believe the rule is just, do you believe it is absolute? Or are there circumstances under which the rule might be applied differently or not at all? Whose rule is this?

Who benefts from the rule in this scenario? Who, in general, would beneft from such a rule?