What type of other calculations are we talking about?
It it's a doctor, things like the length of the injury could vary depending on the lvl of the doctor. Higher the lvl, shorter the injury period.
If it's a trainer, the rating of training will vary depending on the lvl of trainer. Higher the lvl, quicker the training.
If it's a PR manager, perhaps the attendence could vary depending on the lvl of PR manager. Higher the lvl, more attendence, thus more income (although I personally don't think there is much of a difference between PR managers).