Do postdocs in the United States get raises in general? (Is this different for postdocs hired under specific grants vs postdocs hired through departments, such as in mathematics?) If there are raises, how are they determined?
In the UK, postdoctoral Research Fellows, just as permanent academic members, are normally entitled to a annual increase of a salary spinal point, up to a maximum of the salary band. The precise arrangements are of course University-specific.