Throwaway for obvious reasons. Google will pay you significant extra money for oncall, with the huge caveat that your management structure has to fight for it.

Throwaway for obvious reasons. Google will pay you significant extra money for oncall, with the huge caveat that your management structure has to fight for it. I have worked on three teams at Google over four years. All three had some kind of rotation, and none gave extra compensation. Usually they call it something else -- "emergency contact," "caretaking rotation," etc.