I am a PhD student in mathematics in Israel. I still have a couple of years until I graduate, so I am asking this question mostly out of curiosity.

I've recently learned that at least in my university, and at least in mathematics, there is no thesis defense for PhD students. The approval process for a PhD dissertation is very different than the process in the US: Once your advisor decides the thesis is complete, you submit it to the university. A committee (which does NOT include your advisor) then chooses two non-Israeli reviewers, send them the written manuscript and ask them to review it (anonymously). The reviewers send their reports, and then the committee decides whether to approve the thesis. Finally, the university senate should vote to approve the committee's decision, but this is basically a formality.

The main point is that this process is a long one. Once the advisor approves the thesis and it is submitted, the student is no longer considered a PhD student and stops receiving a fellowship. For this reason, most students submit their work in August, near the end of the academic year. However, it can easily take 6 more months for the PhD to be formally approved - the reviewers can pretty much take as long as they like to review the work, and it also takes time for the two committees to convene.

I was wondering if such a process exists in other countries as well. In particular, are American universities aware of the fact that sometimes a PhD graduate will not actually hold a PhD for many months after beginning his postdoc? Does this cause any problems?

Since many Israeli students graduate every year, and many of them find a postdoc in elite American universities, I assume there is no real problem. But I am curious as to how this process works in practice. Will universities in the US let you teach classes and hold the title "Professor" without a formal approval of your PhD?

  • How many years is your thesis lasting ? Never heard of that kind of process but OK. If it is refused, you can rework it ? I think it is an approval, it is just different from the defense.
    – Gautier C
    Commented Jun 20, 2016 at 8:28
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    At my university in the US, some people are hired to the tenure-track based on a search conducted during their expected final semester. If for some reason they do not have their PhD in hand when they begin working, they are classified as an instructor/lecturer (rather than assistant professor) until they do get it. In addition, they have one year to get it or they are let go. I've never seen it go more than a semester, though. I would imagine post-docs are similar. Commented Jun 20, 2016 at 10:35

1 Answer 1


While the details of the assessment/examination process vary around the world, everywhere (that I'm aware of) has the same issue that there is a time lag between handing in your thesis and receiving a decision. That time lag is a few weeks as a minimum, often several months.

This does not generally cause major issues with job applications. Employers who are accustomed to hiring postdoctoral researchers will be very familiar with the delay, and are generally happy to offer a job and have you start working (and being paid) pending the award of the PhD. It will be clear to them, from the reference/recommendation letter from your advisor, whether or not you are likely to pass the PhD. If there is a chance that you might fail completely, it's unlikely that you would even be applying for postdoc jobs, let alone being offered them. I think that technically the employer would have the option of reconsidering your contract were you to unexpectedly fail the PhD, but I have never heard of that actually occurring in practice.

  • You seem to address receiving an offer before being awarded the PhD. But the situation is much "worse" - according to the usual Israeli schedule you will begin your postdoc and receive its salary for many months before officially getting your PhD. Sure, the university will make you the offer, but will they let you start the position and teach classes without having your PhD? Will they pay your salary?
    – xpwm54v
    Commented Jun 20, 2016 at 8:54
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    And about the "professor" comment: It is my impression that in many US universities, a postdoc position funded by the department holds the title of "Assistant professor". I have a few friends that are the "[Some name] assistant professor" at US universities as their postdoc position.
    – xpwm54v
    Commented Jun 20, 2016 at 8:56
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    Yes: you can start the job and start being paid. I've edited my answer to make this point clear. "Assistant professor": this is quite different from being a full "Professor". As I understand it, this is still a step above a normal "postdoc" position, but I do not work in the US, so perhaps someone else can confirm. Commented Jun 20, 2016 at 9:18
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    @user2390246 In the United States, it is sometimes the case that one can go straight from being a graduate student to being a tenure-track professor with no postdoc-type position in between. This used to be fairly normal in computer science, for example, when the field was young and expanding very rapidly.
    – jakebeal
    Commented Jun 20, 2016 at 10:05
  • Fair enough. I have removed my comment about professors. Thanks. Commented Jun 20, 2016 at 10:22

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