How does it work at your center? My father worked at a power plant and was in the IBEW. The senior person picked first and picked only one vacation week. Then it would cycle around until everyone picked one vacation. The whole process would start all over again until everyone had made their selections. I think this is how it works in most places. However, at our center, say the senior person has 8 vacation weeks to select, they pick all 8 they want first. Then the second highest seniority person picks all they have next. Then the third highest seniority person picks however many vacation weeks they have and so on and so forth. I'm curious as to how the vacation selection process works all around the country.