I suspect most white collar union work is more like mine. Seniority factors in in the sense that we get annual raises, and the more years you're around, the mor

I suspect most white collar union work is more like mine. Seniority factors in in the sense that we get annual raises, and the more years you're around, the more annual raises you have received. But e.g. applying for internal jobs, getting OT or time off (as other comments have mentioned) seniority plays no role. Further, there are pay ranges for each job title, so it's quite common that a new hire into a more senior title is getting paid more than an old timer that for whatever reason is still in a more junior title.