WSIB Compliance for Contractors in Ontario: 2026 Guide
WSIB compliance for contractors in Ontario is a legal requirement for the organizations that hire them. Any company that engages contractors or subcontractors on-site must verify that those contractors hold a valid WSIB clearance, and re-verify it every 90 days. Miss that and the contractor’s unpaid WSIB premiums become your liability. In construction, failing to do it is also an offence you can be prosecuted for.
What Is WSIB?
The Workplace Safety and Insurance Board (WSIB) is Ontario’s provincial workers’ compensation authority, established under the Workplace Safety and Insurance Act, 1997 (WSIA). WSIB provides no-fault insurance coverage for workplace injuries and occupational illness. Employers pay premiums; WSIB covers medical costs and lost wages when a covered worker is injured on the job.
WSIB applies to most Ontario employers, including contractors and subcontractors in construction, trades, property services, maintenance, and healthcare.
What Is a WSIB Clearance Certificate?
A WSIB clearance is an official confirmation issued by WSIB that a contractor or subcontractor is registered with WSIB and in good standing — meaning their account is current on premium payments and reporting obligations.
Key facts about WSIB clearances:
- A clearance is valid for up to 90 days from the date of issue
- In practice, most clearances expire on fixed quarterly dates: February 20, May 20, August 20, and November 20
- It confirms the contractor’s registration number and account status as of the date of issue
- It does not confirm compliance beyond the validity window
- WSIB automatically renews clearances for accounts in good standing — but a lapse in good standing stops renewal without notice to the hiring organization
- Hiring organizations can verify clearances directly at clearances.wsib.ca (no login required)
- Contractors can request their own clearance through WSIB online services at wsib.ca
A clearance collected at contractor onboarding does not confirm current compliance — it has to be re-verified at each quarterly renewal date for any contractor with active site access.
Who Is Required to Have WSIB Coverage in Ontario?
Most Ontario employers — including contractors and subcontractors — are required to register with WSIB. Mandatory coverage applies across construction, trades, property services, healthcare, and manufacturing.
Exception: Independent operators outside the construction industry (sole proprietors with no employees) are not always required to register, but may opt in voluntarily. In the construction industry, coverage is mandatory for all operators regardless of structure.
Hiring organizations should require a WSIB clearance from:
- All contractors and subcontractors performing on-site work
- Temporary staffing agencies supplying on-site workers
- Maintenance and facilities vendors with recurring site access
What Happens When a Contractor’s WSIB Coverage Lapses?
Ontario’s Workplace Safety and Insurance Act, 1997 (WSIA) treats construction separately from every other industry, and the clearance certificate is the mechanism it uses.
In construction, whoever directly retains a contractor or subcontractor must obtain a clearance certificate before that contractor begins work (WSIA s. 141.2(2)), obtain a new one if the certificate expires or is revoked before the work is finished (s. 141.2(6)), and must not permit the contractor to work during any period in which they are aware that no certificate is in effect (s. 141.2(8)). The certificate, or a copy, has to be kept for at least three years from the date it was obtained and produced for inspection when WSIB asks (s. 141.2(9)).
Complying with s. 141.2 is what exempts you from the liability in s. 141.1 (s. 141.1(9)); without it, whoever directly retained the contractor must ensure the contractor meets its payment obligations under the Act and is liable for those obligations to the extent the contractor does not meet them (s. 141.1(2)).
Outside construction the mechanism is different. WSIB may determine that your organization is deemed to be the employer of the contractor’s workers, making you liable for the premiums payable in respect of those workers (s. 141(2)); where you are not deemed the employer, you must ensure the contractor meets its payment obligations and are liable to the extent it does not (s. 141(6)).
WSIB covers the injured worker’s claim costs regardless, as a no-fault system — that part isn’t at stake here. The liability above is for what the contractor owes WSIB, and it applies whether or not you knew about the lapse.
Additional consequences of a WSIB compliance gap:
- Failing to obtain a certificate, failing to obtain a new one when it expires or is revoked, failing to keep it for three years, or permitting work while aware that no certificate is in effect is an offence under WSIA s. 151.2(1)
- On conviction, an individual is liable to a fine of up to $25,000, imprisonment of up to six months, or both; a corporation is liable to a fine of up to $500,000 (s. 158(1))
- A corporation convicted of two or more counts of the same offence in the same proceeding is liable to a fine of up to $750,000 for each conviction (s. 158(1.1))
- A prior conviction, multiple counts in one proceeding, and a record of prior non-compliance are statutory aggravating factors when the penalty is set (s. 158(3))
- WSIB audits triggered by a claim can reveal compliance failures across your entire vendor roster
- Documented compliance failures affect insurance premiums, tender eligibility, and regulatory standing
Fast-turnover vendors carry the most exposure. Seasonal contractors and snow removal vendors get onboarded in a week and are usually gone within two months. A clearance can expire mid-engagement without anyone on site noticing — and keeping expiry alerts across your contractor base means catching that now, not during a claim.
WSIB First Aid Requirements: What Changed in June 2026
Alongside clearance certificates, Ontario construction sites carry a separate WSIB obligation: first aid. Under R.R.O. 1990, Reg. 1101, s. 15, where the construction, repair or demolition of a building is in the charge of a general contractor, that general contractor must provide and maintain the first aid stations the regulation requires for the workers on that project, in the same manner as if it were their employer. Whoever controls the project carries that duty, regardless of who employs each worker on it.
Section 1(1)(b)(ii) adds a posting requirement: the valid first aid certificates of qualification of the trained workers on duty must be displayed at the station. A certificate that has expired, or that belongs to a worker who is not on duty, does not satisfy it.
What changed on June 22, 2026
On June 22, 2026, WSIB launched a modernized First Aid Program, which it describes as intended to “improve the quality and consistency of workplace first aid training.” For hiring organizations the operational change is a verification marker: WSIB-approved first aid training providers are required to display a First Aid Program badge on their website as of June 22, 2026, with a QR code linking to WSIB’s list of approved providers.
This was a program update. WSIB confirms that Regulation 1101 itself is not changing at this time, so the general contractor’s obligations under s. 15 and s. 1(1)(b)(ii) are unchanged.
What the badge does and does not confirm
The WSIB First Aid Program badge confirms one thing: that a training provider is currently approved by WSIB to deliver first aid training.
It does not confirm:
- That the first aid stations required by Reg. 1101 are in place and maintained on a given project
- That the workers posted as on duty hold current, valid certificates of qualification
- That the certificates displayed at the station match the workers actually on site that day
Those checks stay with the general contractor under s. 15 and s. 1(1)(b)(ii). Check the badge when you select or renew a training provider — it tells you nothing about what is posted on your site today.
Existing certificates remain valid
All first aid certificates issued by previous WSIB-approved providers up until June 21, 2026 remain valid until their expiry date, so a worker whose certificate is still current does not need retraining. WSIB publishes a list of previously approved first aid training providers for anyone checking where an older certificate came from.
A first aid certificate behaves like every other expiring credential on your site: an issue date, an expiry date, and an issuing provider. Hold those three in one place and review them before they lapse — then the certificate posted at the station is always one that’s still valid.
How to Verify WSIB Compliance: Manual vs. Automated
Manual verification
Hiring organizations can check contractor clearances at clearances.wsib.ca using WSIB’s Quick Access Clearance tool — no login required. The tool returns the contractor’s current clearance status and validity date.
Manual verification limitations:
- Must be repeated every 90 days per active contractor
- No automated alerts when a clearance expires
- No centralized audit record across multiple vendors
- Scales poorly beyond 20–30 active contractors
Automated WSIB compliance tracking
WSIB compliance tracking software monitors every active contractor relationship continuously and alerts your team before a clearance expires. Automated platforms like Entuitive Workforce replace manual calendar checks with real-time monitoring and a timestamped audit trail for every verification event.
Automated tracking is the only reliable approach for organizations managing 30+ active vendors, multi-property portfolios, or cross-provincial contractor rosters.
WSIB and Multi-Province or Canada–US Operations
WSIB covers Ontario only. Organizations with contractors operating across multiple provinces or into the United States must verify compliance separately in each jurisdiction:
| Province / Region | Workers’ Compensation Authority |
|---|---|
| Ontario | WSIB — Workplace Safety and Insurance Board |
| Alberta | WCB — Workers’ Compensation Board |
| British Columbia | WCB BC — WorkSafeBC |
| Quebec | CNESST |
| Other Canadian provinces | Provincial WCB equivalent |
| United States | State-level workers’ compensation (varies by state) |
Each jurisdiction has its own clearance process, validity periods, and registration requirements. Organizations managing cross-border contractor rosters require a compliance platform that handles all jurisdictions in a single dashboard. Requirements also differ by sector: the industries we work with each carry their own documentation set on top of workers’ compensation.
What an Audit-Ready WSIB Compliance Record Includes
In a regulatory audit, claim dispute, or tender application, hiring organizations must demonstrate that their WSIB verification process was active — not just that a certificate was collected at onboarding.
A complete, audit-ready WSIB record includes:
- The clearance itself (clearance number + validity date)
- The date and method of verification for each contractor
- A log of every re-verification event
- A record of any lapse detected and the corrective action taken
- Confirmation that coverage was current during the period the contractor performed work
The same record structure applies to every other expiring document you hold on a vendor: certificate of insurance tracking runs on the same issue date, expiry date and verification log.
Automated compliance platforms generate this record continuously. Manual processes typically cannot produce it retroactively with sufficient precision to satisfy a claim investigation.
For a worked example, see how a national retailer onboards contractors across hundreds of locations.
FAQ
What is a WSIB clearance certificate?
A WSIB clearance is an official confirmation from Ontario’s Workplace Safety and Insurance Board that a contractor’s WSIB account is registered and in good standing, including current on premium payments and reporting. It is valid for up to 90 days.
How long is a WSIB clearance valid?
A WSIB clearance is valid for up to 90 days from the date of issue. In practice, most clearances expire on fixed quarterly dates: February 20, May 20, August 20, and November 20. WSIB automatically renews clearances for accounts in good standing — but a lapse in the contractor’s account stops renewal without any automatic notification to the hiring organization.
How often should I re-verify a contractor’s WSIB status?
At each quarterly renewal period — February 20, May 20, August 20, and November 20. For contractors with ongoing site access, verify that a current clearance is in place at every renewal date, not just at onboarding.
What happens if a contractor I hired doesn’t have valid WSIB coverage?
In construction, whoever directly retains a contractor must obtain a clearance certificate before the contractor begins work, obtain a new one if it expires or is revoked, and must not permit the contractor to work while aware that no certificate is in effect (WSIA s. 141.2). Complying with s. 141.2 exempts the hiring organization from the liability in s. 141.1, under which it would otherwise be liable for the contractor’s payment obligations to the extent the contractor does not meet them. Failing those obligations is an offence under s. 151.2, and on conviction an individual is liable to a fine of up to $25,000 or six months’ imprisonment or both, and a corporation to a fine of up to $500,000 — up to $750,000 for each conviction where two or more counts of the same offence are decided in the same proceeding.
Does WSIB apply to all contractors in Ontario?
Most Ontario contractors are required to register with WSIB. Mandatory coverage applies across construction, trades, property services, healthcare, and maintenance. Independent operators outside construction may be exempt but can opt in voluntarily. Hiring organizations should require a current clearance from all on-site contractors regardless of the contractor’s own registration assessment.
How do I verify a contractor’s WSIB clearance?
Use WSIB’s Quick Access Clearance tool at clearances.wsib.ca. No login is required. Enter the contractor’s WSIB account number to view their current clearance status and validity date.
Can one platform track WSIB and workers’ compensation requirements in other provinces and the US?
Yes. Entuitive Workforce tracks WSIB (Ontario), WCB (Alberta, BC), CNESST (Quebec), and US state-level workers’ compensation requirements in a single compliance dashboard — with automated monitoring and re-verification alerts across all active contractor relationships.
Does the new WSIB First Aid Program badge replace a general contractor’s first-aid station obligations?
No. The badge confirms that a first aid training provider is currently approved by WSIB to deliver training. It does not confirm that the first aid stations required by Regulation 1101 are in place on a project, and it does not confirm that the trained workers on duty hold current certificates. Under R.R.O. 1990, Reg. 1101, s. 15, a general contractor in charge of the construction, repair or demolition of a building must provide and maintain the required first aid stations as if it were the employer of the workers on that project, and under s. 1(1)(b)(ii) the valid first aid certificates of qualification of the trained workers on duty must be displayed at the site.
Do first aid certificates issued before June 22, 2026 need to be redone?
No. All first aid certificates issued by previous WSIB-approved providers up until June 21, 2026 remain valid until their expiry date. WSIB’s June 22, 2026 change was an update to its First Aid Program, not an amendment to Regulation 1101. WSIB publishes a list of previously approved first aid training providers for anyone verifying where an older certificate was issued.
Sources: Workplace Safety and Insurance Act, 1997, S.O. 1997, c. 16, Sched. A, ss. 141, 141.1, 141.2, 151.2, 158 — legislation current to April 24, 2026, ontario.ca/laws/statute/97w16; WSIB First Aid Program; First aid requirements, R.R.O. 1990, Reg. 1101, ontario.ca/laws/regulation/901101; Previously approved first aid training providers