Where did I get that from? Experience of Industrial relations...but don't confuse LIFO with experience i.e Say Captain Jones has worked for shall we say BA for 20 years and of that ,say 18 on B737 and 2 on A330, and he's in a pool for redundancy with another Captain Smith who has only worked for BA for 3 years but has 15 years experience on buses. Smith would score less on length of service but distinctly more on experience,then the employer would likely look at personnel records , sickness disciplinary and make a choice from that.Long Service will come into it, but will not be the sole criteria in a well run organisation