Engineering and Applied Science Technology Practice in Ontario
Scope of Practice and the Regulatory Frame
Ontario's engineering technicians and technologists practise under the Professional Engineers Act, which reserves "professional engineer" and "P.Eng." and defines the practice of professional engineering. Certified members hold the C.E.T. (Certified Engineering Technologist) or C.Tech. (Certified Technician) designation granted by OACETT, which administers certification, a code of ethics, and a complaints and discipline process. Understand the division of labour: a P.Eng. takes professional responsibility for engineering work and seals it; a C.E.T. typically applies established technology, prepares designs and documentation, and may supervise technical staff, but does not hold the independent licence to seal engineering work unless separately licensed. Scope-of-work questions test whether you know who may sign, seal, or certify what.
The Employer-Client-Technologist Triangle
Practise within your competence, and escalate when a task exceeds it. Duty flows to the public, the employer, and the client simultaneously; when these conflict, public safety and the public interest prevail. Confidentiality attaches to client and employer information but yields to a legal duty to disclose imminent harm or a court order.
Traps
Questions often blur "technician" and "technologist"; remember C.Tech. is the technician stream and C.E.T. the technologist stream. Another trap: assuming a technologist may offer engineering services directly to the public without a certificate of authorization held by the firm. Also watch for conflating OACETT membership with a licence to practise engineering independently.
Rule of Thumb
Before accepting any assignment, ask: Am I competent, am I authorized, and is someone accountable for the engineering judgement? If any answer is no, stop and refer upward. For example, a C.E.T. asked to approve a structural load calculation for a client should prepare the calculation under a P.Eng.'s supervision and have the P.Eng. take responsibility, documenting the review in the project record rather than signing personally.