How to Become a Firefighter in Ontario (2026)

Last verified: October 23, 2026

Short answer: Ontario has no single provincial hiring list for career firefighters. Each fire department sets its own requirements and runs its own recruitment. Most of the six recruitment pages we reviewed ask for much the same core package:

age 18 or older and a high school diploma
NFPA 1001 Firefighter I and II certification, usually with an IFSAC or Pro Board seal and often with NFPA 1072 hazardous materials
first aid and CPR, and in some postings an Emergency Medical Responder (EMR) certificate
a Class D licence with a Z endorsement
candidate testing through the service that department uses: some want valid certificates when you apply, others book the testing for you
swim or water skills, vision and hearing standards, and a police vulnerable sector check

The details that trip people up differ from one department to the next. Those details include which testing service a department uses, which certificates must still be current, and when documents are due. Use this checklist to get ready, then read every word of the posting you're applying to.

Nine-step roadmap to an Ontario firefighter job, in a suggested order. Qualify: 1, basic eligibility (18 or older, high school diploma, right to work in Canada); 2, NFPA 1001 Firefighter I and II, often with NFPA 1072, with an IFSAC or Pro Board seal, usually the longest step; 3, first aid and CPR, and in some postings EMR; 4, a Class DZ driver's licence, which needs a full G licence first. Test: 5, candidate testing with OFAI, FSO or York, whichever the posting names, checking how long it must stay valid; 6, water skills; 7, vision and hearing. Apply: 8, a police check with vulnerable sector screening, usually requested near the offer; 9, apply, then interviews, screening and the medical. — The nine steps in this checklist, grouped by stage, in a suggested order. For most candidates NFPA 1001 takes the longest, so start it early. New drivers should start on the G licence early too.

Who sets the requirements?

Two layers matter.

The province certifies firefighters. According to Ontario's firefighter training and certification page, the Office of the Fire Marshal (OFM) "trains and certifies firefighters to National Fire Protection Association (NFPA) Standards". The OFM defines a Pre-service Firefighter Program as four standards:

NFPA 1001 Firefighter Level I
NFPA 1001 Firefighter Level II
NFPA 1072 Hazardous Materials Awareness
NFPA 1072 Hazardous Materials Operations

The OFM gives certification exams at a list of recognized colleges and registered career colleges.

Departments decide who to hire. Each municipality writes its own posting, picks its own testing service and runs its own interviews and checks.

You may also hear about Ontario's firefighter certification regulation, O. Reg. 343/22. It places its duty on municipalities, not on applicants. It says every municipality "must ensure that its firefighters perform a fire protection service" listed in its table only if, from that service's compliance date on, they hold the listed certification. For the firefighting roles and most other services, that date was July 1, 2026, so the requirement has applied since then. Technical rescue services have until July 1, 2028.

The regulation's 36-month exception is narrow. It covers only the first two services in its table (exterior attack, and exterior attack with auto extrication), for someone who has been a firefighter for "no more than 36 months" and works under the supervision of a firefighter certified to that standard. It isn't a general grace period for new hires, and it doesn't tell you what a particular employer will accept. The job posting does that.

The checklist, step by step

1. Meet the basic eligibility rules

Five of the six pages we reviewed set a minimum age of 18. Hamilton's page doesn't list an age, but it requires a Class D licence with a Z endorsement (a DZ), and Ontario's truck handbook says Class D applicants must be at least 18. Most pages also ask for:

an Ontario Secondary School Diploma or equivalent
legal entitlement to work in Canada
the ability to communicate effectively in English

Hamilton's full-time recruitment page (recruitment was closed on October 23, 2026) asks for an "Ontario High School Diploma or approved equivalent". Mississauga asks applicants with international credentials for a credential evaluation report.

2. Get NFPA 1001 (and often NFPA 1072) certified, with a seal

For most candidates, this is the biggest step and takes the most time. Toronto, Mississauga, Brampton and Waterloo want NFPA 1001 Firefighter I and II with an IFSAC or Pro Board seal. Chatham-Kent asks for "NFPA 1001 Level 1 and 2 accredited certifications" or grandfathered status from current or past work as a firefighter. Hamilton's page doesn't name NFPA 1001; it asks for the certifications required by Ontario's firefighter certification regulation. Brampton, Mississauga and Waterloo also list NFPA 1072 (or the older NFPA 472) hazardous materials certification. Ontario's Pre-service Firefighter Program includes NFPA 1072 Awareness and Operations, so that route covers it.

Timing matters. Mississauga says certifications are required "prior to the date of application submission". Toronto's standing Operations Firefighter position page uses the same wording for NFPA 1001. (On October 23, 2026, Toronto's application page listed that position as "No Positions Available".) Brampton also says certification requirements must be met before you submit, and Waterloo wants proof of certification attached to your application.

Ontario's page says candidates have "a maximum of three attempts for each written examination before additional training is required". After the third attempt, it says, candidates must "complete the full course again" before trying another certification exam. It also warns that the OFM does not recognize non-accredited training. Check that your school is on the province's list of recognized schools (the page was last updated in February 2024), and confirm with the school before you enrol.

3. Get first aid, CPR and (often) EMR

The pages differ here:

Department	First aid and CPR	EMR
Brampton and Mississauga	Standard First Aid and CPR "C"	Both list EMR as an extra: beneficial at Brampton, preferred at Mississauga. Mississauga's minimum qualifications also mention "CPR BLS/HCP certificate or higher (e.g. EMR)"
Waterloo	CPR-BLS	EMR "or equivalent"
Toronto (standing position page)	Not listed separately	EMR is a requirement; an Advanced Emergency Medical Care Assistant (AEMCA) certificate is also considered
Hamilton (full-time recruitment page)	Basic Rescuer or Level C CPR, plus Standard First Aid, "dated no more than 12 months before the date of your application"	—

4. Hold the right driver's licence

All six pages we reviewed require a Class D licence with a Z (air brake) endorsement. Toronto also accepts class D "or higher (A, B or C) with a Z endorsement". Most departments also look at your driving record:

Waterloo's page caps demerit points and recent convictions.
Hamilton's page asks for a DZ "with 0 demerit points".
Toronto asks for an acceptable driver's abstract before a firm offer, and Brampton and Mississauga want a driving record "acceptable to the City".

You need a full G licence before you can apply for a Class D. Ontario says getting from a G1 to a full G takes about 20 months for most people, so if you're a new driver, start early.

5. Pass the candidate testing that department uses

Departments use different testing services, and their certificates aren't interchangeable:

OFAI (Ontario Fire Administration Inc.): Toronto's standing position page asks for OFAI certificates for:
- Stage One Firefighter Aptitude and Character Test (FACT): "does not need to be current"
- Stage Two Hearing, Vision and the Encapsulated Treadmill Test (ETT): current and valid on the posting's closing date
- Stage Three Firefighter Physical Aptitude Job-Related Tests (FPAT): current and valid on the posting's closing date

Waterloo asks for "all three stages" of OFAI testing. OFAI's Stage Three includes a Firefighter Technical Skills Assessment as well as the FPAT, so plan on both Stage Three certificates and confirm with Waterloo.

Firefighter Services of Ontario (FSO): Chatham-Kent's page asks for valid FSO Candidate Testing Certificates for:
- the Clinical Assessment
- the Candidate Physical Ability Test (CPAT)
- the aptitude exam (FSO's CPS exam; see our CPS guide)
- vision and hearing
- the Tread Water Test
- psychological screening: the Emotional Stability and Resiliency (ESR) assessment

Hamilton's full-time recruitment page sends candidates to FSO twice: first for a video-based Firefighter Entry Level Test, then for an Applicant Assessment that includes the CPS written exam.

York University fitness testing: Mississauga lists a "York University Firefighter fitness assessment (scheduled by the City of Mississauga)". Its 2026 recruitment FAQ says the City won't accept OFAI certification.
A choice: Brampton's Req. 580 (open October 6 to 26, 2026) lists "Completion of the Ontario Fire Administration Candidate Testing Program Stage 2", then "OR", then "Completion of the York University Firefighter Fitness Testing". In other words, either one meets that requirement. If you take the OFAI route, you'll still need the FACT: OFAI says you "must have passed the Stage One FACT™ and the Stage Two Hearing Assessment" before the treadmill test.

Certificates expire, and expiry dates differ by test. Check which date each posting uses. Toronto wants its Stage Two and Three certificates current on the posting's closing date, and its application page says all documents must be dated before, and valid on, the day you submit. Waterloo says you must "meet and maintain" its requirements "throughout the recruitment and selection process". Hamilton wants CPR and first aid to "remain valid throughout the process until time of hire". Plan for the whole window, and be ready to renew a six-month certificate, such as OFAI's ETT or FSO's Clinical Assessment, partway through.

For a full comparison of the physical tests, see Firefighter Physical Tests in Ontario: OFAI ETT/FPAT vs FSO CPAT vs York University Fitness Testing. For OFAI's stages, fees and booking rules, see our OFAI candidate testing guide. To find out which written test a city uses, see Firefighter aptitude tests by city.

6. Prove you can handle water

Water requirements vary:

Brampton: NFPA 1006 Surface Water Rescue (Level II under the 2013 standard or Operations level under the 2021 standard), OR a current OFAI Swim Test certificate. Brampton also asks you to "successfully complete the required swim assessment".
Mississauga: lists a swim assessment.
FSO: its Tread Water Test is 15 consecutive minutes.
Toronto: candidates must pass the Lifesaving Society's Canadian Swim to Survive Standard during the department's recruit program.

7. Meet vision and hearing standards

Brampton and Mississauga point to the vision requirements of NFPA 1582. Hamilton's page lists "at least 20/30 corrected OR 20/40 uncorrected both eyes tested together", along with normal depth perception and colour vision. Mississauga asks for "excellent hearing ability without the use of artificial aids". OFAI and FSO both check vision and hearing. OFAI tests hearing at its facility, and your own optometrist completes and stamps its vision form. FSO's Medical Assessment covers both.

8. Time your police check

Expect a criminal record check with vulnerable sector screening:

Brampton: the vulnerable sector check must come from the city where your primary residence is located and be "dated within six (6) months of the date an offer is extended".
Mississauga: asks for a Level 3 Vulnerable Sector Screening.
Toronto: asks for both checks from an Ontario police service.

Most of the pages we reviewed ask for the check around the conditional offer, and Brampton's must be dated within six months of the date an offer is extended. Find out how long your local police service takes, then request the check so it's ready when you're asked for it and still recent enough.

9. Apply, then get through interviews, screening and the medical

The application usually opens the process; it doesn't finish it. The pages we reviewed go on to:

panel or behaviour-based interviews
psychological or resiliency screening (Waterloo and Hamilton; Chatham-Kent wants an FSO ESR certificate)
a pre-employment medical
reference checks

We cover the interview in The Firefighter Panel Interview in Ontario.

At a glance: what the pages we reviewed ask for

Department (page reviewed)	Status on October 23, 2026	Candidate testing named	Notes
Toronto (standing Operations Firefighter position page)	"No Positions Available" on Toronto's Applying to Toronto Fire Services page	OFAI Stages One, Two and Three	Stage One can be expired. The others must be valid on the day you apply and on the closing date
Mississauga (hiring-process page)	No open posting. Its linked firefighter posting showed "Sorry, this position has been filled."	York University fitness assessment, scheduled by the city. The City won't accept OFAI certification	Also behaviour/competency-based interviews, medical, swim and cognitive assessments
Brampton (Req. 580)	Open October 6 to 26, 2026	OFAI Stage 2 OR York University fitness testing	Swim: NFPA 1006 surface water OR OFAI Swim Test, plus a swim assessment
Waterloo (Become a firefighter page)	No firefighter posting open on its job board (standing qualifications page)	All three OFAI stages	Requirements must be maintained throughout the process. Psychological resiliency testing comes later
Chatham-Kent (Emergency Services Recruitment page)	No firefighter posting open; the department hires "periodically"	FSO certificates (Clinical, CPAT, aptitude, vision and hearing, tread water, ESR)	DZ, first aid and CPR Level C
Hamilton (full-time recruitment page)	Recruitment closed	FSO's video-based Firefighter Entry Level Test, then FSO's Applicant Assessment, which includes the CPS written exam	Psychological assessment and in-person interview

Statuses are as of October 23, 2026. Of the six pages, only Brampton's was a posting open for applications. These are only the pages we reviewed, not every department in Ontario. Requirements change from one recruitment to the next.

Mistakes that cost candidates a recruitment

Letting a certificate lapse. OFAI's Stage Two guide lists the ETT as valid for 180 days (its FAQ says six months). FSO lists its Clinical Assessment as valid for six months. Short windows like these are the easiest to miss.
Getting certified after you apply. Some postings say NFPA certification must be complete before you submit.
Missing upload or document rules. Brampton's Req. 580 asks for all certifications combined into one PDF that "must not exceed 5 MB". Hamilton's page says that if you don't bring the listed documents to the interview, "you will be disqualified from the process."
Assuming one test covers every city. OFAI, FSO and York are separate. Check each posting.

Where FireStart fits

FireStart focuses on the written aptitude tests in step 5. Our test guides cover the FACT, the CPS exam (administered by FSO), the NFST (FPSI) and NTN FireTEAM, plus legacy Gledhill-Shaw OS practice. To compare the two written aptitude exams named on the pages we reviewed, see FACT vs CPS. For what the job pays, see our Ontario firefighter salary guide. You can also browse department pages and current firefighter job listings. We don't list every department in Canada, so always confirm the details with the department itself.

FAQ

Do I need NFPA 1001 before I apply?

For most of the pages we reviewed, yes. Toronto, Mississauga, Brampton and Waterloo list NFPA 1001 Firefighter I and II with an IFSAC or Pro Board seal as a minimum. Mississauga, Toronto and Brampton say it must be in place before you submit your application, and Waterloo wants proof attached to your application. Chatham-Kent also accepts grandfathered status from current or past work as a firefighter, and Hamilton asks for the certifications required by Ontario's firefighter certification regulation.

Is OFAI testing accepted everywhere in Ontario?

No. Mississauga's 2026 recruitment FAQ says the City "does not require and will not be accepting OFAI certification", and it schedules York University fitness testing itself. Chatham-Kent asks for FSO certificates. Brampton's Req. 580 (open October 6 to 26, 2026) lists OFAI Stage 2 or York. Check each posting.

Does O. Reg. 343/22 mean I legally need certification to apply?

The regulation puts its duty on municipalities to make sure their firefighters are certified for the services they perform. It doesn't set applicant eligibility. Each department's posting does that, and a posting can build the regulation in: Hamilton's asks for the certifications the regulation requires.

How long does the whole process take?

It depends on the department, the posting window and where you are in your training. We haven't seen an official, province-wide timeline, so plan around the specific posting's deadlines.

How to Become a Firefighter in Ontario (2026): The Requirements Checklist, Step by Step