A PhD defence does not always end with the pleasant words “congratulations, doctor.” Canadian universities allow a defence committee to return one of several verdicts, including major revisions and resubmission. If you have just received that outcome, the immediate question is: how many times can you resubmit, and what happens if the next attempt also fails? This guide answers both, walks through the timeline, and gives you a recovery plan.
Possible Defence Outcomes
Most Canadian universities use four standard outcomes after a doctoral defence, plus a fifth in rare cases.
| Outcome | What It Means | Timeline |
|---|---|---|
| Pass with no corrections | Rare. Submit final copy immediately. | Days |
| Pass with minor corrections | Typos, citation fixes, small clarifications. | 4–8 weeks |
| Pass with major corrections | Restructure a chapter, add analysis, revise discussion. No second defence required. | 3–6 months |
| Revise and resubmit | Substantial rewrite required. Second defence usually required. | 6–18 months |
| Fail | Dissertation rejected. No further attempts — degree denied. | — |
How Many Resubmissions Are Allowed?
Most Canadian universities permit one resubmission after a “revise and resubmit” verdict. If the second defence is also unsuccessful, the candidate is normally deemed to have failed the doctoral examination and the PhD is not awarded.
Specific institutional norms:
- University of Toronto (SGS): one resubmission is permitted; the second oral defence is normally held within 12 months of the first.
- UBC: one resubmission permitted; the resubmitted thesis must be defended within 6–12 months unless an extension is granted.
- McGill: one resubmission. If the resubmission is also unsuccessful, the candidate can request a third-party review through the Graduate & Postdoctoral Studies office, but this is rare and not guaranteed.
- Waterloo, Western, McMaster, Queen’s, Ottawa: all allow one resubmission. None routinely permit a second.
- Concordia, Carleton, York: one resubmission. The resubmission deadline is set by the dean’s office, usually 12 months.
Across all institutions, the resubmission must be substantive — you cannot simply “polish” the original and re-submit. The committee will compare the original and the resubmission and assess whether each of their concerns has been addressed.
Common Reasons for Required Resubmission
- Weak methodology: sampling problems, missing assumption checks, qualitative coding without explicit reliability or trustworthiness assessment.
- Insufficient engagement with the literature: failure to position the contribution against current scholarship.
- Findings not supported by data: over-claiming, ignoring null results, or interpreting effects beyond what the analysis warrants.
- Confused or under-stated contribution to knowledge: the examiners cannot identify what your work adds.
- Significant structural or writing problems: chapter order, signposting, repetition, or argument coherence.
- Ethical concerns: retroactive disclosure of conflicts, consent issues, missing TCPS 2 documentation.
Timeline After a Resubmission Verdict
- Defence day, written verdict: chair reads the decision; you receive a signed examination report listing required revisions.
- Weeks 1–4: read the report carefully. Schedule a meeting with your supervisor to map every revision item to a concrete change.
- Months 1–6: draft the revisions. Keep a separate “response to examiners” document that lists each concern, your revision, and where it appears in the new draft.
- Month 6–9: internal review with supervisor and committee members. Some committees will read interim drafts; others wait for the final submission.
- Month 9–12: submit revised dissertation plus response document to the Graduate Studies office. Schedule the second defence.
- Second defence: usually shorter than the first — focused on whether each prior concern has been addressed.
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What to Do When Faced With Resubmission
- Do not panic. Revise-and-resubmit is a recoverable verdict. Most candidates who receive it succeed on the second attempt.
- Read the examination report twice. Distinguish between specific revision requirements and general impressions.
- Meet your supervisor within two weeks. Map every line of the report to an action item.
- Request examiner clarification if any concern is ambiguous. Your university’s graduate-studies office can facilitate this.
- Build a response document that mirrors the examiners’ concerns. This document is read alongside the revised thesis at the second defence.
- Get external help if needed. A subject-matched dissertation editing service can identify structural and language problems your supervisor may have missed.
If the Second Defence Is Also Unsuccessful
If the resubmitted dissertation is also rejected, most Canadian universities will award the candidate the next-lower degree (typically a Master’s by Research, if not already held) and close the doctoral file. The candidate is normally not eligible to re-enter the same program; they can apply to a different institution but must disclose the prior outcome.
If the decision was procedurally flawed — for example, an examiner had an undeclared conflict of interest, or the committee deviated from published evaluation criteria — the candidate can file an appeal with the university’s graduate studies office or its ombudsperson within the specified appeal window (typically 30–60 days). Appeals on academic grounds alone (“they were wrong about the work”) are rarely successful.
Frequently Asked Questions
How many times can I resubmit my PhD dissertation in Canada?
Once. Almost every Canadian university limits the resubmission to a single attempt after a “revise and resubmit” verdict. A second unsuccessful defence usually results in the doctorate not being awarded.
How long do I have to resubmit my PhD?
Most universities give 6 to 12 months from the defence date. Extensions are possible with supervisor support and dean’s approval, particularly if the required revisions involve additional data collection.
Do I need a new oral defence after resubmission?
Usually yes. Most Canadian institutions require a second oral examination focused on whether the prior concerns were addressed. A handful of universities permit a written-only re-examination if the original concerns were limited to clearly defined revisions.
What is the difference between “major corrections” and “revise and resubmit”?
Major corrections mean the committee passed the thesis but requires substantial revisions before final approval — no second defence. Revise and resubmit is a more serious verdict: the thesis as defended did not pass, and the candidate must produce a substantially revised version that returns for a second oral examination.
Will a resubmission appear on my official transcript?
No. Transcripts record the awarded degree and the year, not the defence history. The detailed examination outcome is held in the graduate studies file and is not disclosed publicly unless you authorise it.
Can I switch supervisors before resubmission?
Sometimes. If the supervisor-candidate relationship has irretrievably broken down, most graduate studies offices will facilitate a supervisor change. This is more common when the original supervisor agrees and is willing to remain as a committee member rather than primary advisor.
