Knowledge Centre

PEO publishes a variety of resources to assist licence holders in their roles and responsibilities, as well as guidance for applicants going through the licensure process.


Ontario professional engineers are part of a community of more than 87,500 PEO licence and certificate holders committed to enhancing the quality of life, safety and well-being in the province.

As Ontario’s engineering regulator, PEO relies heavily on its volunteers. More than 1,000 professional engineers, engineering interns and non-engineers volunteer their time each year on behalf of the association through their participation.

PEO's mandate, as described in the Professional Engineers Act, is to ensure that the public is protected and that individuals and companies providing engineering services uphold a strict code of professional ethics and conduct.

Online Learning Modules

PEO’s Online Learning Modules provide licence holders, volunteers, staff and applicants with various learning and development opportunities.

Practice Advice Resources and Guidelines

PEO offers a variety of practice advice resources to assist licence holders in providing professional and ethical engineering services.

Frequently Asked Questions

Validation assists in assuring to PEO that the licensing requirements set out in the Act and the regulations have been satisfied. Validation does not constitute a review of the applicant’s work experience, in Canada or internationally—it simply confirms that it was acquired. 

A validator assesses and rates the applicant’s work experience. A validator must have direct, first-hand knowledge of the applicant’s work and must have provided suitable professional supervision of the applicant throughout the work period being validated and have taken technical responsibility for the applicant’s work. The validator may have a title other than supervisor and may be a manager, mentor, client or colleague.  

There is no maximum number of validators. The minimum required is one.  

Yes. Under the new licence process that came into effect on May 15, 2023, all applicants must demonstrate both the academic and experience requirements before applying. All applicants must have a minimum of 48 months of acceptable engineering work experience, which must be demonstrated at the time of application through PEO’s competency-based assessment (CBA). 

You may be eligible to re-apply. Please follow the instructions on our website, and any requirements you have satisfied from a past application will carry forward to the new application. If you have any questions, please contact us by email at and provide your PEO #.

Please email your completed CBA Experience documents (CBA P.Eng. Application Form and CBA Experience Records Form) to

So long as you meet any assigned deadlines on your P.Eng. application, you are eligible to enrol in the EIT program. In order to do so, please submit your EIT request to for review and processing. After the EIT annual fee is paid and processed, your EIT membership will become active.

We have two separate dedicated teams focused for each process without any favoritism towards any one process.

No, do not reapply. Since May 15, 2023 PEO is no longer evaluating for Canadian experience (for both new and legacy process applicants).

If you applied for a licence before May 15, 2023, you would continue the same licensure path that was in place at the time you applied. However, you will be invited by PEO to the new application process depending on the stage of your application.  For example, current applicants who benefit from the new rules, such as the removal of the Canadian experience, will receive a message from PEO if all they were missing was the one year of Canadian experience.