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

For engineering work experience gained in Canada, the validator must be a professional engineer (P.Eng.) who was registered during the work period they are validating. For experience gained outside of Canada, it is expected that they will be a senior engineering practitioner.

It is preferred that any validator who is not a P.Eng. and is validating international experience, be a senior engineering practitioner and licensed as an engineer in their jurisdiction. PEO may request information to support their engineering qualifications, which may include proof of academic and engineering credentials, and professional designation during the assessment process.

We are updating the CBA for clarity on this particular point to note that a family member working with a candidate can be a validator. 

Validators should rate competencies in confidence to PEO. Candidate self-assessments and validator ratings are to be submitted to PEO independently. 

Technically, yes. However, you won’t be able to submit an application until you have completed a CBA with at least 48 months of engineering experience.  

Canadian Environment competencies may be obtained abroad. For example, a candidate working for Shell Oil in Nigeria may be using the same American Petroleum Institute (API) engineering standards used in Norway, United States or Windsor, Ontario. 

A candidate can submit industry sponsored research under the CBA. 

Visit to see the new CBA application process steps and to get started.  

Please note that we only consider requests to expedite when applicants provided us with a letter signed by the employer, or potential employer, indicating that: 

1. The P.Eng designation is needed for the applicant to perform certain duties in their current work; or  

2. The P.Eng designation is a condition of a job offer and is a limiting factor for the applicant to be hired. 

Applicants may use up to 12 months of experience acquired prior to the completion of their undergraduate degree towards the minimum 48-month requirement. Applicants can include this pre-graduation experience in the experience summary, being careful to select the pre-graduation option. The start date of this pre-graduation experience must not exceed two years prior to the degree conferral date. 

The competency-based assessment (CBA) framework does not allow for post-graduate studies’ academic credits to be applied towards the experience requirement. However, a candidate or applicant can include post-graduate research or work experience in their CBA as long as they have a qualified validator.