WSIB Premiums, Registration, and Employer Financial Obligations

Ontario’s Workplace Safety and Insurance Act, 1997 (WSIA) and the Workplace Safety and Insurance Board (WSIB) set out everything a covered employer must register, file, and pay into the workplace-injury insurance system. This page collects those financial and administrative obligations in one place — registration, premiums, the earnings ceiling, reporting and reconciliation, experience rating, the insurance fund, contractor-chain liability, and enforcement — and links each rule to its official source.

Most of what follows is drawn directly from the Act and carries a single-source statutory confidence label. Three items — the maximum insurable earnings ceiling, the annual premium rate, and the reporting-frequency tiers — come from the WSIB’s own published guidance, are verified against wsib.ca, and change every year. Those numbers are a snapshot, not a fixed value; each one is flagged inline with the date it was confirmed and a note to re-check the current figure at the source before relying on it.

Schedule 1 vs Schedule 2: registering with the WSIB

Both Schedule 1 and Schedule 2 employers must register with the WSIB within 10 days of first qualifying as one, and the schedule an employer falls into changes what it owes the Board. Schedule 1 employers pay premiums into a collective insurance pool; the Board draws on that pool to cover claims, so no single employer’s costs track directly back to its own injured workers. Schedule 2 employers are self-insurers: they stay out of the pool and instead pay the Board back for whatever it pays out on their workers’ claims. The plan reaches the Crown and any permanent board or commission the Crown has appointed, in addition to ordinary employers.

What each schedule supplies on registration differs. A Schedule 1 employer provides an estimate of the total wages its workers are expected to earn during the year, plus whatever else the Board needs to place it in a class, subclass, or group. A Schedule 2 employer supplies the information the Board needs to work out the payment it may owe.

The paperwork does not end at registration. If an employer stops being covered, or if there is a material change in its obligations, it has 10 days to tell the Board. Schedule 1 employers also file an annual wage statement and must keep accurate wage records in Ontario, producing them whenever the Board asks. Every statement has to be certified as accurate — by the employer personally, by the manager of the business, or, for corporations, by a company officer with personal knowledge of what is being reported.

The common failures cluster here: missing the 10-day registration window, understating the wage estimate, or letting a required statement slide. If a statement is not filed, the Board can calculate the premiums itself — and if that estimate turns out to be too low, the employer pays the shortfall. On top of that, the Board can add interest or a premium surcharge, and administrative penalties stack on top of any court fine.

Source: Workplace Safety and Insurance Act, 1997, ss. 67–80.

Confidence: single-source (statutory).

Premiums and payment obligations

How an employer pays depends on its schedule, and neither schedule may pass any of the cost on to workers. Schedule 1 employers pay premiums into a shared insurance fund: the WSIB sets the total it needs each year, divides it among industry classes and groups based on how much risk each one brings, and sets the rates. The premium is calculated against each worker’s earnings, but only up to a per-worker ceiling. That ceiling is tied to the maximum average earnings figure set under section 54 of the Act — and for the 2021 calendar year specifically, a temporary provision fixed it at $97,308 unless regulations set a different number. (For the current ceiling, see the maximum insurable earnings section below.) In exchange, a Schedule 1 employer is not on the hook to pay benefits to an injured worker directly — the fund does that.

Schedule 2 employers are self-insured. They pay the actual benefits owed to their own injured workers, reimburse the Board for anything it advances on their behalf, and may be required to hand over the commuted value of ongoing loss-of-earnings and other Part VI payments. They also make payments toward the Board’s operating expenses.

Three ways employers get burned on payment:

• Underpaying. If an employer miscalculates and pays too little, it owes the shortfall — and as a penalty, it may have to pay that same amount again. The Board can waive the penalty if the mistake was honest and unintentional.
• Paying late. Late premiums attract an added percentage on the outstanding balance, the amount or capitalized value of any benefits tied to accidents during the default period, and a further prescribed administrative penalty.
• Clawing it back from staff. The Act bars employers from deducting any benefit amount owed to a worker from that worker’s wages, and from requiring workers to contribute in any way toward the employer’s insurance liability. A worker can sue in court to recover anything taken contrary to that rule.

Source: Workplace Safety and Insurance Act, 1997, ss. 81–95.1.

Confidence: single-source (statutory). The $97,308 figure is a fixed 2021-specific statutory number; the current per-worker ceiling is set annually and is covered, with its 2026 value, in the maximum insurable earnings section below.

Schedule 2 self-insurance: what it costs

A Schedule 2 employer does not pay into the pooled insurance fund — its own organization carries the cost of its workers’ claims — but “self-insured” does not mean off the hook for everything else. The Board can still require several things of a Schedule 2 employer:

• A fair share of running the system. The Board sets the total that all Schedule 2 employers pay each year toward its expenses and the cost of administering the Act, and divides it up by what it considers each employer’s fair share. It can also add an amount to build special funds, which it may use to relieve a Schedule 2 employer hit by a disaster or similar hardship.
• A deposit. If the Board thinks it is needed to pay benefits promptly, it can require an employer to put up a specified deposit, which it then uses to pay that employer’s workers’ benefits.
• Insurance, on direction. The Board can direct an employer to insure against its liability, for an amount the Board sets and with an insurer it approves. If the employer does not, the Board can buy the coverage and bill the employer.
• Top-ups for benefit increases. The Board can require both Schedule 1 and Schedule 2 employers to pay extra to fund increases in benefits tied to prior accidents.

Occupational disease is the tricky one. The general rule is that the employer who last employed the worker in the job where the disease arose is the responsible employer. But the Board can reassign that, or split liability among several employers for a gradual-process disease. Where the trail of prior employers cannot be pieced together and the employer proves the worker did not contract the disease with it, neither the employer nor the worker’s claim lands on it.

Source: Workplace Safety and Insurance Act, 1997, ss. 85–95.

Confidence: single-source (statutory).

What is the maximum insurable earnings ceiling, and why does it reset every year?

The WSIB charges premiums on each worker’s earnings only up to an annual ceiling — the maximum insurable earnings figure — and that ceiling resets every year on January 1, indexed to changes in Ontario average earnings. As of January 1, 2026, the maximum insurable earnings ceiling is $121,700, up from $117,000 in 2025. Pay above the ceiling is not insurable and is not premium-bearing, so the number used last year is not the number used this year.

The reset is not arbitrary. Under the Act, the ceiling is indexed to changes in average earnings in Ontario as measured by Statistics Canada: when average earnings rise, the ceiling rises. That is why it moves most years and why it is a recurring item, not a one-time setting.

That 2026 ceiling of $121,700 (up from $117,000 in 2025) is published at wsib.ca. Alongside it, the WSIB has set a 2026 average premium rate of $1.23 per $100 of insurable payroll, down from $1.25 in 2025. The average rate is exactly that — an average; the rate that applies to a given employer depends on its class, so an employer’s own rate will differ. Both figures change: the ceiling resets again on January 1, 2027, and the premium rate is set each year as well. For the method of applying the ceiling, see the WSIB’s how-to-calculate-your-premium-and-insurable-earnings guidance.

One correction worth stating plainly: a vendor source circulated an incorrect 2026 ceiling of roughly $106,200. That figure is wrong. The 2026 ceiling is $121,700 as published by the WSIB, and the WSIB figure governs. If a calculator, spreadsheet, or third-party tool shows a different number, check it against wsib.ca rather than trusting the tool.

Where employers trip up: carrying last year’s ceiling into the new year, capping a worker’s insurable earnings at a stale figure, and trusting a vendor number instead of the source. The ceiling moves every January 1, so the cap each worker hits is a moving target — treat the figures above as a snapshot confirmed against wsib.ca on 2026-06-08, and confirm the current ceiling and rate on the WSIB premium-rates page before running payroll for a new year.

Source: WSIB, 2026 premium rates, under the Workplace Safety and Insurance Act, 1997.

Confidence: verified (WSIB-published; figures change annually — re-confirm at wsib.ca).

How often does an employer report and pay, and who files the annual reconciliation?

The WSIB sets an employer’s reporting frequency from its annual insurable earnings, in three tiers — and only some employers also file a year-end reconciliation. The tiers are:

• $1,000,000 or more: report and pay monthly.
• $20,000 to $999,999.99: report and pay quarterly.
• Less than $20,000: report and pay annually.

The due dates follow the tier:

• Monthly — the end of the following month (for example, January’s premiums are due by the end of February).
• Quarterly — April 30, July 31, October 31, and January 31.
• Annual — April 30.

Frequency can change as payroll grows. The WSIB reviews annual and quarterly accounts once a year. If an employer’s annualized insurable earnings reach $1,000,000, the WSIB moves it to monthly reporting, effective January 1 of the next year — and, as below, that can also pull the employer into the annual reconciliation.

The annual reconciliation, and who must file it. Reconciliation is the year-end true-up: the employer compares the premiums it reported and paid through the year against the premiums actually owing, and pays any difference. It is due March 31 each year. The detail most often misstated: the reconciliation is required only of monthly reporters (plus any employer who closes an account part-way through a year, whatever its frequency). Quarterly and annual reporters do not file a separate reconciliation — their regular reports already settle the year.

This matters because vendor “compliance calendars” routinely list a WSIB reconciliation as an annual to-do for every employer. That is not the rule. Two recurring mistakes follow from it: copying a March 31 reconciliation deadline off a generic calendar when you report quarterly or annually and owe no reconciliation at all; and the opposite — crossing $1,000,000 in annualized earnings, being moved to monthly reporting on the next January 1, and not realizing the annual reconciliation now applies. Frequency and the reconciliation duty move together, so re-check both when payroll grows.

These thresholds, dates, and rules are operating rules the WSIB can change. Confirm the current tiers and your assigned frequency on the WSIB “How to report and pay your premiums” page and the requirement on “Completing the reconciliation form” (wsib.ca), and in your WSIB account.

Source: WSIB, “How to report and pay your premiums”, under the Workplace Safety and Insurance Act, 1997, ss. 78–79.

Confidence: verified (WSIB-published; tiers and dates can change — re-confirm at wsib.ca and in your account).

Experience rating, merit rating, and cost transfer (NEER and CAD-7)

A WSIB premium is not just a flat rate: the Board can raise or lower what a particular employer pays based on the circumstances it thinks matter — most of all, the employer’s injury record. A workplace that racks up injuries more often, or at a higher cost, than the average for its industry can expect to pay more. A consistently good record, equipment that meets modern standards, and proper first-aid compliance can push a premium the other way.

To put structure around this, the Board runs experience and merit rating programs — the schemes employers know as NEER and CAD-7. The goal is to reward employers who prevent injuries and get hurt workers back to work. Under these programs the Board sets how it measures injury frequency and accident costs, and then must adjust premiums up or down on that basis.

Two related rules catch employers off guard:

• Cost transfer. This applies only where the injured worker is employed by a Schedule 1 employer (so their right to sue is already extinguished under s. 28). In that situation, if the accident was also the fault of a different Schedule 1 employer or its workers, the Board can direct that the benefits — or a portion of them — be charged to that other employer’s cost record rather than yours.
• Return-to-work penalties. If the Board decides an employer failed to meet its return-to-work obligations, it can levy a penalty — a percentage it sets of the cost of the benefits paid while the non-compliance continues — and that penalty becomes a debt the employer owes the Board.

Where employers trip up: treating a single claim as harmless. On an experience-rated account, one poorly managed lost-time claim — or a stalled return to work — can cost far more in surcharges than the claim itself. (The return-to-work duty itself, whose breach triggers the penalty above, is covered in the related WSIB claims and return-to-work page.)

Source: Workplace Safety and Insurance Act, 1997, ss. 82–86.

Confidence: single-source (statutory).

The insurance fund: sufficiency, reserves, and surplus

For Schedule 1 employers, the money behind workers’ compensation sits in the WSIB’s insurance fund, and the Board must keep that fund large enough to pay two things: current benefits (what is owed to injured workers and survivors this year) and future benefits (the present-day value of claims that will keep paying out for years). The Board also draws on the fund to cover its own running costs and other payments the Act requires.

The key duty is sufficiency — the fund must be able to meet obligations as they come due, the way the regulations spell out. The Board also cannot load any one class of employers with unfair or excessive payments, whether for this year’s benefits or future ones. If the fund ever falls short after a prescribed date, the Board must follow the prescribed steps to top it back up.

Once the fund is sufficient, the Board may build reserve funds for future benefits — including larger reserves for some industries than others — and may dip into them if regular money runs short. There is also a special reserve fund for disasters or events that would otherwise unfairly hit one class. Reserve money can only be invested as pension funds are invested under the Pension Benefits Act.

On the upside: when the fund’s sufficiency ratio lands at 115% or more (but under 125%), the Board may distribute surplus among employers; at exactly 125%, a distribution is generally required. Compliance with the Act can affect what — or whether — an employer receives. On the downside, employers get caught by a premium deficiency: if one employer fails to pay, the gap is made up by additional premiums across all classes — everyone shares the shortfall — though the defaulting employer stays on the hook for what it owes.

Source: Workplace Safety and Insurance Act, 1997, ss. 96–99.

Confidence: single-source (statutory).

Can a business be liable for a contractor's unpaid WSIB premiums?

Yes. When a business retains a contractor or subcontractor, the WSIB can come after the business for the premiums the contractor fails to pay — and the rules differ depending on whether the job is construction.

Outside construction. The Board can decide to treat the business as the deemed employer of the contractor’s workers, which makes it responsible for their premiums. Even if the Board stops short of that, the business is still obligated to ensure the contractor meets its payment obligations under the plan, and is on the hook to the extent the contractor does not pay. In the deemed-employer scenario the business can seek reimbursement from the contractor; in the non-deemed scenario it can seek indemnity. Either way it can deduct what the contractor owes from money it would otherwise pay them, and the Board decides how much of the liability is the contractor’s.

In construction. Hire a contractor directly and you must ensure they meet their payment obligations and you are liable if they fall short. The clean way out is a clearance certificate. Before letting the contractor start, obtain a certificate (or a copy) confirming they are registered and paid up, and stating the dates it covers. Keep it for at least three years and produce it for inspection if the Board asks. Comply with this and the liability rule does not apply.

The trap is timing: a certificate can expire or be revoked mid-job. If it lapses before the work is done, you need a fresh one, and you cannot knowingly let the contractor keep working without a certificate in effect. Two further points: “exempt home renovation work” is carved out of these construction rules; and separate provisions can make the owner of a premises liable for a Schedule 1 employer’s unpaid premiums, or hold a successor employer — someone who buys, leases, or otherwise acquires the business — liable for all amounts the previous employer owed under the Act.

Source: Workplace Safety and Insurance Act, 1997, ss. 141–146.

Confidence: single-source (statutory).

What can the WSIB do to enforce, and what are the penalties?

The workers’ compensation system runs on accurate reporting and prompt payment, and the Act backs it with real teeth. The Board can audit an employer’s books, enter the workplace to check safety and conditions, and obtain a court order to search premises and seize records by force if needed.

On the money side, the WSIB has several ways to collect what an employer owes:

• It can demand security for payment, which the employer must post within 15 days.
• It can set off what it owes the employer against what the employer owes it.
• It can file a default certificate in court so the debt is enforced like a court order, or — once the employer is more than 30 days overdue — hand it to the municipality to be collected through the tax roll (with the collector keeping an extra 5 per cent).
• Once a certificate is filed with the court and the WSIB registers a writ of seizure and sale with the local sheriff, that amount becomes a first lien on the employer’s industry-related property, ranking just behind municipal taxes.

A wide range of failures are outright offences: not registering, filing inaccurate payroll statements, missing premium payments, not reporting an accident, obstructing an inspector, illegally deducting from a worker’s wages, or suppressing a claim. Directors and officers who knowingly let a corporate offence happen are personally guilty too.

The penalties are steep. An individual faces a fine up to $25,000, up to six months in jail, or both; a corporation faces up to $500,000, rising to $750,000 per count where there are multiple counts of the same offence in one proceeding. Prior convictions and a record of non-compliance are aggravating factors.

Where employers trip up: the 10-day window to report a material change, and the two-year prosecution limit running from when the Board learns of the act, not from when the employer did it. There is no limit at all for knowingly false statements about a claim.

Source: Workplace Safety and Insurance Act, 1997, ss. 135–158.

Confidence: single-source (statutory).

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This page is general information about Ontario workplace-safety-insurance law, not legal advice. The maximum insurable earnings ceiling, the premium rate, and the reporting-frequency tiers change every year — confirm the current figures, effective dates, and your assigned frequency at wsib.ca and in your WSIB account before you rely on them, and get advice on your own situation.