the longer serving employees helped the business to make its money, the war chest it’s currently perched on. Someone in the door a few months didn’t. Use disciplinary etc that’s on record but length of service should be used for employees that have not crossed the line. If you’re genuinely sick or fatigued then you have a legal and contractual duty not to report, when you take out performance and conduct issues that are on record only a very small amount will have been selected. LIFO ends up being a deciding factor when all is equal.