How many times can a professor use outside offers to negotiate retention packages at their university?
I don't know, but a reader who is possibly in a position to get their second outside offer asked me this question. This person's first offer was early (tenure-track), but that was a while ago, so this person is not a habitual collector of outside offers. Nevertheless, they wonder if they should go through the outside-offer-ritual a second time.
I have discussed similar issues in the F/SP blogs and in The Chronicle of Higher Education, but I don't think I've ever directly asked for opinions about whether there is a maximum number of offers that is appropriate (whatever that means). Of course the only opinion that matters is that of the professor-in-question's institution, but it's still fun to speculate and opine.
I don't think 2 is excessive, especially if they are widely spaced in a career. I don't think 2 is excessive anyway, and even more would be OK (in theory). Your institution can always say no, they aren't going to negotiate and then you make your decision to stay or leave, depending on what you want to do given the various complex factors involved in these decisions.
That seems quite straightforward, but I know there are nuances, one of which is the effect of multi-offers on the opinions of your colleagues in your department and administrators in your university. If you are a cosmic superstar who brings fame and fortune to your university, maybe the administration (sort of) likes the fact that other institutions are constantly trying to poach you. Colleagues may even admire you for being so academically desirable. For most of us, however, the stakes (for the university at least) are quite a bit lower, and the threshold beyond which we would be widely perceived to be a selfish, greedy jerk (accompanied by little or no admiration) is encountered more easily.
That's why, although theoretically the sky's the limit for the number of offers you could bring to the table in your career, most mortal professors probably should consider a limit.
But what should that limit be? And should there be a particular spacing between outside offers that are sought or entertained, or should it be more random, such as whenever there is a major research accomplishment that helps attract such offers? The realistic limit likely does scale with level of fame and accomplishment, so we'd have to come up with a handy scheme (or equation) that can be consulted as needed. Something that can be used to estimate or calculate how many outside offers one can proffer in a certain number of years based on specific benchmarks, like number of papers in high-impact journals, number of highly cited papers (h-index), number of Nobel Prizes etc.
O great blog community, please opine on this issue: Do you think there is a realistic maximum number of offers that a semi-illustrious professor should entertain? How can one determine what that maximum is? Just keep hurling offers at your administrators until they hurl them back? Surely we can do better than that. If we can't come up with a more specific scheme (or equation), we will have failed to produce the deliverable with which we are tasking ourselves and there will therefore be no outcome for us to assess.