Personal Protective Equipment (PPE) obligations in Ontario come from the Occupational Health and Safety Act (OHSA), Ontario Regulation 213/91 (Construction Projects), Ontario Regulation 851 (Industrial Establishments), and the relevant CSA standards referenced by those regulations. This page explains what PPE is legally required, which standards apply, and why each item matters.
OHSA section 25(1)(a) places the cost and maintenance of all prescribed protective equipment on the employer. That includes hard hats, safety glasses, boots, gloves, hearing protection, respirators, high-visibility clothing, fall protection harnesses, and any other PPE required by regulation or by the specific hazards of the workplace. The employer cannot pass PPE costs to the worker, cannot deduct PPE costs from wages, and cannot require the worker to supply their own PPE as a condition of employment. The employer must also ensure that PPE is properly fitted, that workers are trained on its use and limitations, and that damaged or expired equipment is replaced. Section 28(1)(b) creates the corresponding worker duty: every worker must use or wear the equipment required by the employer or by regulation. Failure by the worker to wear required PPE is itself a violation — not just a disciplinary matter, but a regulatory offence that can result in a fine. The system is bilateral: the employer provides and maintains; the worker uses and cares for. An inspector who finds a worker without required PPE will typically issue orders to both the employer (for failing to ensure compliance) and the worker (for failing to wear the equipment).
Every construction worker in Ontario needs a CSA Z94.1 certified hard hat. The standard defines two types: Type 1 protects against blows to the top of the head; Type 2 protects against both top and lateral (side) impacts. For most construction work, Type 1 Class E is sufficient. Class E means the hard hat is rated to withstand 20,000 volts — not because every construction worker does electrical work, but because accidental contact with overhead power lines is a leading cause of electrocution on construction sites. Type 2 is required for demolition, overhead work, and any task where lateral impact from falling debris is a realistic hazard. The single most important rule about hard hats is that modifications void the certification. Drilling holes for ventilation, painting the shell (solvents can weaken the polymer), and placing stickers over the shell surface all compromise the hat's ability to absorb and distribute impact energy. The shell works by flexing on impact — anything that changes the material properties of the shell changes the failure mode. CSA Z94.1 recommends replacing shells every 5 years from the date of manufacture and suspensions every 12 months. After any impact, the hat must be replaced immediately even if no damage is visible. UV degradation is the most common cause of premature failure — a hard hat left on a dashboard or stored in direct sunlight will become brittle well before its 5-year life. Check the manufacture date stamped inside the shell (clock format: center arrow points to month, year printed at center).
Safety glasses meeting CSA Z94.3 (or ANSI Z87.1+, which is accepted on most Ontario sites) are required whenever there is a risk of eye injury from flying particles, dust, chemical splash, or radiation. The minimum is impact-rated polycarbonate lenses with side shields — either wrap-around frames or clip-on side shields on prescription safety glasses. For tasks with higher hazards, the protection escalates. Chemical handling requires splash-proof goggles with indirect ventilation to prevent liquid entry. Grinding and cutting require a face shield worn over safety glasses — a face shield alone does not protect the eyes from particles entering from below. Welding introduces the shade number system: arc welding requires shade 10-14 depending on amperage, oxy-fuel cutting requires shade 3-8, and brazing requires shade 3-4. The shade number indicates how much visible and infrared light the filter lens blocks. Using too low a shade for arc welding causes photokeratitis (arc eye) — essentially a sunburn on the cornea that causes intense pain, tearing, and temporary blindness 6-12 hours after exposure. Auto-darkening helmets are standard for arc welding because they allow the welder to see the workpiece in the light state (shade 3-4) and darken to the welding shade within 1/25,000 of a second when the arc strikes. Four-sensor helmets are preferred for positional welding (overhead, vertical) because single or dual-sensor helmets can experience blind spots when the sensors are shadowed by the workpiece.
CSA Z195 safety footwear uses a triangle-and-symbol system stamped on the boot tongue or side. The green triangle is the foundation — it means the boot has a toe cap rated to withstand a 125-joule impact (Grade 1), equivalent to a 23 kg object falling from a height of about 0.55 metres. That is the minimum for all Ontario construction sites. The white rectangle means the sole has a puncture-resistant plate that resists penetration by a 1.2 kN test nail — required on any site where nails, screws, or sharp debris may be underfoot. For construction and demolition, green triangle plus white rectangle is the practical minimum. The omega symbol indicates electrical shock resistance (ESR) — the sole and heel resist a specified voltage for one minute. ESR footwear is required for electrical work. It is important to understand that ESR footwear is NOT a substitute for de-energizing and lockout/tagout — it is a last line of defense. A wet or contaminated ESR boot may not provide adequate insulation. Metatarsal guards protect the top of the foot above the toe cap and are required for demolition material handling where heavy objects may fall on the instep. Internal met-guards are built into the boot; external met-guards strap over the laces. Both must cover from the toe cap to the ankle.
Ontario Regulation 381/15 sets the noise exposure limit at 85 dBA Lex,8h — the equivalent continuous sound level over an 8-hour workday. This is not a peak limit; it is a time-weighted average. A worker exposed to 88 dBA for 4 hours and 70 dBA for 4 hours has an Lex,8h of approximately 85 dBA. Common construction tasks exceed 85 dBA routinely: concrete breaking (100-110 dBA), angle grinding (95-105 dBA), circular saws (90-100 dBA), pneumatic nail guns (90-100 dBA), and heavy equipment (85-100 dBA). When the Lex,8h exceeds 85 dBA, the employer must provide hearing protection that reduces the exposure at the ear below 85 dBA. When the Lex,8h exceeds 105 dBA, double protection — earplugs and earmuffs worn together — is required. The Noise Reduction Rating (NRR) printed on hearing protection packaging is a laboratory value that does not reflect real-world performance. The accepted derating method is to subtract 7 from the NRR and divide by 2: a plug rated NRR 33 provides approximately (33-7)/2 = 13 dB of real-world reduction. That is why high-NRR plugs are necessary even for moderate noise exposures. Annual audiometric testing is mandatory for workers regularly exposed to 85+ dBA. The employer pays for the testing, which must include a baseline audiogram at hire and annual follow-ups. A shift in hearing thresholds triggers investigation and potential reassignment.
Respiratory hazards on construction sites include silica dust (concrete cutting, grinding, sandblasting), wood dust (framing, sanding), welding fumes (metal particles and gases), chemical vapours (paints, coatings, adhesives), and asbestos fibres (renovation and demolition of pre-1990 buildings). CSA Z94.4 is the Canadian standard for respiratory protection programs. It requires a written program, medical evaluation, fit testing, training, and proper selection of respiratory equipment matched to the hazard. An N95 filtering facepiece respirator is the minimum for particulate hazards — it filters 95% of airborne particles. For vapours and gases, an air-purifying respirator (APR) with cartridges matched to the contaminant is required. The Safety Data Sheet (SDS) Section 8 specifies the type of respiratory protection needed for each chemical. Half-face APRs provide an assigned protection factor (APF) of 10 — meaning they reduce the contaminant to 1/10th of the ambient concentration. Full-face APRs provide APF 50. For IDLH (immediately dangerous to life or health) atmospheres — which includes many confined space entries — only supplied-air respirators or SCBA are acceptable. The most critical rule in CSA Z94.4 is annual fit testing. A respirator that does not seal to the face provides no protection regardless of its filter rating. Quantitative fit testing (using a particle counter) is the gold standard. Workers with facial hair that interferes with the respirator seal cannot achieve an adequate fit and must not be assigned to tasks requiring respiratory protection unless a positive-pressure supplied-air system is used.
CSA Z96-15 defines three performance classes for high-visibility safety apparel. Class 1 provides the minimum background material and retroreflective tape — suitable for low-risk environments with slow traffic. Class 2 requires a vest or shirt with fluorescent background material (yellow-green or orange-red) and retroreflective stripes on the torso — this is the standard for most Ontario construction sites. Class 3 requires fluorescent and retroreflective material on both the torso and limbs (sleeves or legs), providing 360-degree visibility — required for road construction, flagging, and any work near vehicular traffic in reduced-light conditions. The fluorescent material makes the worker visible in daylight by converting UV light to visible light. The retroreflective tape makes the worker visible at night by reflecting headlights directly back to the driver. Both components must be present and in good condition. A vest that is faded, soiled, or has peeling reflective tape no longer meets the standard and must be replaced. High-vis garments should be laundered per the manufacturer's instructions — harsh detergents and high heat can degrade both the fluorescent dye and the retroreflective material.
A Ministry of Labour inspector who finds a worker without required PPE can issue a compliance order on the spot. If the situation creates an immediate danger, a stop-work order under OHSA section 57 halts the activity until compliance is achieved. On summary conviction, fines under OHSA can reach $100,000 for an individual and $1,500,000 for a corporation. But the real cost is human. In the 2022-2023 fiscal year, WSIB accepted over 3,200 eye injury claims, over 1,800 hand/wrist injury claims, and over 900 head injury claims from Ontario workplaces. Many of these injuries were preventable with proper PPE. A single lost-time eye injury — a piece of grinding grit that penetrates an unprotected cornea — can result in permanent vision loss, a WSIB claim that affects the employer's experience rating for years, and a worker who can never do the same job again. The investment in PPE is trivial: a hard hat costs $15-45, safety glasses cost $5-25, boots cost $80-250, and hearing protection costs $2-60. The cost of a single workplace injury — in medical treatment, lost productivity, WSIB premium increases, regulatory fines, and human suffering — exceeds the annual PPE budget for an entire crew. There is no economic argument for skipping PPE. There is only negligence.