Most contracts only require that you have a "clean" driving licence. We stopped using our cars for work when the trust brought in car parking charges (£0 to £260 overnight). We couldn't get any reduction for using our own vehicles. The management checked our contracts and sure enough it is not part of our terms and conditions. Our renal techs have lease cars, they have a lot of patients in the community and satellite units to visit, even they couldn't get a reduced parking permit. The renal guys now do the external jobs that we used to do. We have had to find a way to fund their parking permits from our budget.