I know someone who is finishing a postdoc in mathematics and is in the thick of the tenure-track job search. He had something like 15 interviews at the Joint Mathematics Meetings (JMM) last week. At the moment he has four invitations for on-campus interviews. Of these, exactly one is one of his very top choices. He sent me a list of seven institutions at which he had JMM interviews, has not yet received campus interviews, but would prefer them to some of the places for which he has received but not yet accepted interviews. He is getting worried that he could book too many interviews at these less desirable places and then be boxed out of later interviews to come. By the way, I think he is excellent and unusually broadly appealing, and I absolutely expect him to get more on-campus interviews than he now has. I don't think I have heard of people who have actually booked so many interviews that they have no slots left, and I am tempted to tell him not to worry so much about that -- the calendar is full of days -- but I suppose it could happen in his case. What do you think he should do, e.g. how should he respond to two on-campus invitations that are less desirable than many of the JMMs he's waiting on?

Here is what I said so far:

1) Contact all seven desirable places, let them know the situation, and see if he can shake loose interviews from them or at least information about timing of the interviews.

2) Countenance the possibility of cancelling a job interview if he really does get booked solid.

I am not really sure about 2). Clearly you should cancel all interviews once you've accepted a job, and cancelling interviews when you already have an offer in hand makes just as much sense. I'm not sure about the ethics of cancelling an interview to take another interview instead. Is this commonly done? Would it annoy people or look shady to some? If this is going to be viewed as dishonorable behavior even by some, I think he would really like to know that: he is as "fully honorable" as anyone I've known.

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    "Would it annoy people or look shady to some?" No. He should not ask for expenses to be reimbursed if he does this, though. Jan 12, 2017 at 5:12
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    @aparente: "What do you think is driving this carpet-interviewing?" I think it is being driven by the exigencies of the academic job market, and the postdoc is not acting any differently than anyone else. I find the analogy to college application pretty curious, and I'm not sure what you mean by "carpet-interviewing". May I ask if you know the typical approximate number of academic jobs a math postdoc applies for? Jan 12, 2017 at 15:54
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    Most math post-doc I know would apply for all available position that fits their field and curriculum... The job market is so tight you do not have the luxury to be selective before applying...
    – BlaB
    Jan 12, 2017 at 16:08
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    @BlaisB: Yes, that's what I was getting at. So the answer to my question is "On the order of one hundred jobs." That's how many I applied to 11 years ago to get five on-campus interviews, of which I took three (I had a job in hand...). Jan 12, 2017 at 16:14
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    1) I would just advise that given an opportunity to interview, your friend/colleague/whatever try to choose the earliest possible date. Then as interviews cascade there is less of a chance of running into conflict. 2) I recently complained about having to interview and travel a lot etc. to a senior colleague of mine, who chuckled and said "Yeah...that's what you get for trying to get a job...". There are worse problems to have. 3) I have heard of a math postdoc going on 8+ interviews and getting no job. No reason to cancel things without a job in the pocket.
    – tkr
    Jan 12, 2017 at 20:25

2 Answers 2


I know the hiring process in Math is a little unique. My answer is based on the assumption that an "interview" means a 1.5-2 day campus visit and that interview season is 10 weeks. Further, I assume that when contacted about interviews a candidate is typically given 3 choices of dates and that departments are interviewing about 5 candidates.

As long as you avoid campus visits on Wednesdays, you can fit two visits in a week. This means there are about 20 interview slots in a season. As the number of interviews approaches 10, the likelihood that the 3 options offered for one of these interviews will clash with previously accepted interviews. To calculate an exact probability you need to know the rate of Wednesday campus visits. At 15 it is very likely for a clash and at 20 you would have to get very lucky.

I think in this particular case the post doc is looking at 11 interviews at most and has already gotten a few rejections so likely fewer. This means that the post doc might need to tell a school that none of the dates work, but would still be able to offer 10 alternatives dates within the prime season as well as early and late visits. On the hiring committees I am familiar with providing a wide range of alternatives would not indicate disinterest. The likelihood of the availability of one of these dates depends on how busy the department is, but I would be surprised if none of them worked. If in fact there is a clash, and the school is highly desirable, then the post doc would need to cancel (or reschedule) a previously scheduled interview. Again, contacting a school to reschedule an interview is not a sign of disinterest, but rather a reality of job searches.

The real problem is not scheduling, but the ability to do a large number of interviews. The number of "slots" can be drastically reduced if the post doc has teaching requirements. Similarly, having a campus visit on Monday and Tuesday, traveling to a new city on Wednesday, and having another campus visit on Thursday and Friday is tiring. Doing that for weeks on end is the craziness of the job search. I know lots of people who have managed 10 interviews in a season with a 1 class teaching load. I don't recall anyone getting to 15.

I'm not sure about the ethics of cancelling an interview to take another interview instead.

As I said above, I would suggest rescheduling prior to cancelling. If there really is a clash, cancelling is the only thing you can do. Cancelling the less desirable interview (after factoring in likelihood of getting a job), is the only sane thing to do. Some search committee members will complain, but no one will hold it against the post doc for long.

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    The overall interview season might be 10 weeks, but no single school's is, in my experience. Once a school has determined their finalists, they will want to interview them all in the shortest possible length of time, so that they can get an offer to the top candidate as quickly as possible. 10 weeks is much too long for that. In many cases 3 weeks is too long. So if you aren't available during a particular school's 2-3 week window, you may not be able to interview at all. Jan 12, 2017 at 20:32
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    I agree with @NateEldredge: for a lot of the schools in question, the interview season is contained in January 1 through February 15, and there is concentration towards the middle of this time interval. Jan 12, 2017 at 21:14

He is getting worried that he could book too many interviews at these less desirable places and then be boxed out of later interviews to come.

  1. My doctor's office reserves some slots for "same day appointments." Perhaps your friend could leave two slots unbooked, so as to have a place to absorb a late-arriving invitation.

  2. How about scheduling at least half of the less desirable visits towards the tail end of the season?

  3. If a conflict arises between an already committed trip to a "less desirable" place and one to a plum institution, then I would suggest letting the less desirable place know that a conflict has arisen and asking if it would be possible to reschedule to a later date. It that less desirable place has not found the right candidate yet, it will be glad to have your friend visit after the big wave is over.

  4. Perhaps the bulk of the less desirable interviews could be set up for a Skype interview -- at least at the preliminary level. Your friend could say he is trying to keep down his carbon footprint.

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