Using "engineer" or "engineering" in an Ontario business name: the PEO rules

Section 12 of the Professional Engineers Act says no person shall offer to the public, or engage in the business of providing to the public, services within the practice of professional engineering except under and in accordance with a certificate of authorization.

Section 40 turns to words. It is an offence for a person without a licence to use the title professional engineer, or an abbreviation or variation, as an occupational or business designation, or to use the title engineer in a manner that will lead to the belief that the person may engage in the practice of professional engineering. On the engineer title, the Act places the burden of proof on the defendant. It is also an offence for a business without a certificate of authorization to use a term, title or description that will lead to the belief that it may provide engineering services to the public.

The fines are $10,000 for a first title offence and $25,000 for each later one, and $25,000 then $50,000 for providing services without the certificate. The Act allows the engineer title where another Act or regulation authorizes or requires it.

Professional Engineers Ontario answers the naming question directly in its enforcement guidance: a business may use engineer or engineering in its title, but it requires written permission from PEO. The request names the responsible professional engineer and licence number, the proposed name, the activities of the business, an undertaking to obtain a certificate of authorization, and the type of entity. Names using consulting engineers need permission from PEO's Council.

The same guidance lists titles PEO accepts because they sit outside professional engineering in the public mind, such as flight engineer, train engineer, sound engineer and operating engineer, and it accepts manager of engineering as a role description.

PEO's guidance states that software developers are barred from using the title software engineer. The current Act contains no exemption for the technology sector. A startup that lists software engineers on its careers page, or builds engineering into a studio name, is using a regulated word in Ontario.

Many technology companies use developer, programmer, architect or builder for roles, and studio, labs or works in names. Those choices avoid the question altogether and are often more distinctive.

For a licensed firm, engineering in the name is an asset worth the paperwork: it tells clients the firm is authorized. The stronger names pair it with a distinctive element, since the word itself is shared by every competitor and adds nothing a client can remember.

For a business outside licensed practice, the word is a liability. A hypothetical design and fabrication shop called Northway Engineering invites a regulator's letter; Northway Fabrication describes the work and leaves the regulated term alone.