noun
order of seniority
Refers to the ranking or sequence determined by length of service or appointment date, often used in workplace or organizational contexts.
先任順で役職が決まる。
Positions are decided by order of seniority.
先任順に並んでください。
Please line up in order of seniority.
Compound of 先任 (seniority, prior appointment) and 順 (order).