What Overpaid is saying is that a driver that is on vacation, comes in to work, contractually, that driver has NO bumping rights to a route. Contractually, the driver should be sent home. If management works the driver, it would be at the bottom of the seniority list, taking out the crapiest of crapwagons.
When I was told that I would not be covering a route because the driver was working his vacation, the BA took care of it. The driver stayed home and I worked his job. The driver could have worked, but would have been at the bottom of the seniority list, as a cut driver.
We have a couple of drivers in my center that save their option weeks and then never ask for those days off. If a driver feels the need to work vacation, that is the only contractual way to do it. The week of Thanksgiving, said driver will be paid for all unused split days.