The federal government is not subject to state labor law so the time frames in the California statutes will not apply. It is the federal civil service rules that determine paycheck processing. Generally speaking, the federal government will process your final pay like any other, so you will get that on the same scheduled pay day as you would if you were still working there. I have left federal employment twice, and that was what occurred each time. The federal government doesn’t generally speed up your final paycheck.