Nanny Workers' Compensation Guide: WorkSafeBC, WSIB, CNESST & WCB (2026)

Here is a scenario that happens more often than it should: a family in Vancouver hires a nanny, pays correctly, files a T4 at year-end, and never registers with WorkSafeBC. Two years later, during a routine audit of their child care deductions or a minor workplace incident, the gap surfaces. The back-assessed premiums, penalties, and potential personal liability can be significant.

The good news is that registration is straightforward once you know what each province requires. This guide walks through the registration obligations for domestic employers in British Columbia, Ontario, Quebec, and Alberta: the four provinces where this question comes up most often.

If you are still working out whether you are legally an employer at all, start with our guide to paying nanny taxes in Canada, which covers the CRA’s criteria for a domestic employment relationship.

Why Workers’ Compensation Registration Matters

Workers’ compensation insurance is a no-fault system. If your nanny slips on icy front steps while arriving for work, or strains their back lifting your toddler, they may be entitled to wage-loss and medical coverage through your province’s workers’ compensation board, but only if coverage applies (because you registered when required, or because optional coverage was in place).

Without required registration:

• You can be personally liable for costs the board would otherwise cover: medical treatment, wage-loss benefits, rehabilitation, and long-term disability.
• The board can assess unpaid premiums from the start of employment, plus interest and penalties.
• Your nanny may have no board coverage, which can damage the employment relationship and leave civil liability risk with the household.

Premium costs for household employers are usually modest relative to the risk. Exact rates depend on your province and classification. For context in 2026: WorkSafeBC’s province-wide average base rate is $1.55 per $100 of assessable payroll; Quebec’s published unit rate for domestic help services to individuals (unit 77040) is $2.04 per $100 of insurable wages; Ontario assigns class-based rates (the province-wide average premium rate for 2026 is $1.23 per $100). Always confirm the rate assigned to your account.

British Columbia: WorkSafeBC

WorkSafeBC is British Columbia’s workers’ compensation board and the one most often overlooked by domestic employers. Many BC families assume workers’ compensation is only for commercial businesses. It is not.

WorkSafeBC Registration Thresholds

Under the Workers Compensation Act, homeowners and renters who hire their own worker (rather than buying services from an independent business) may need to register. WorkSafeBC’s homeowner guidance uses these hour thresholds:

Situation	Coverage needed?
Before-/after-school care (babysitter or part-time nanny)	Yes at 15 or more hours per week; optional below that
Ongoing home services (full-time nanny, housekeeper, home health worker, chef, gardener, etc.)	Yes at 8 or more hours per week; optional below that
One-time project around the home (e.g., neighbour paid to paint)	Yes at 24 or more total project hours (all workers combined); optional below that

A typical full-time nanny arrangement falls under ongoing home services and therefore requires registration once hours reach 8 per week. Hiring a registered independent business (for example, an incorporated cleaning company) generally makes you a customer, not their WorkSafeBC employer. You should still get a clearance letter confirming the business is registered and in good standing.

WorkSafeBC registration is tied tightly to your nanny’s weekly hours, the same hours that drive statutory overtime thresholds and vacation accrual under BC employment law. Review the applicable limits in our BC Nanny Overtime and Employment Standards Guide.

When to Register with WorkSafeBC

You must register as soon as you become an employer under the Act. WorkSafeBC recommends submitting an application about 30 days before the worker starts so coverage can be set up on time. Do not treat that as a three-month grace period. There is no published “within 3 months of first day” deadline for domestic employers.

How to Register with WorkSafeBC

1. Go to worksafebc.com and apply through the Online Employer Registration portal (or Form 1800).
2. Describe that you are hiring a worker for your personal residence (nanny / household help).
3. WorkSafeBC assigns a classification unit (CU) and premium rate, then issues an account number.

Homeowners hiring domestic childcare or companion-type help are often placed in classifications such as CU 764029 – Hiring or Providing Companion Services or Domestic Childcare. For 2026, WorkSafeBC publishes a 1.46% net premium rate ($1.46 per $100 of assessable payroll) for that CU. Your assigned CU may differ, so confirm the rate on your account. The 2026 maximum wage rate used for assessable payroll / compensation purposes is $127,500 per worker.

Premium Calculation

Your assessment is calculated as:

Assessable wages × Premium rate ÷ 100

Example using the published 2026 CU 764029 rate of $1.46 per $100, if your nanny earns $48,000/year:

$48,000 × 0.0146 = $700.80 per year

WorkSafeBC invoices based on your reporting cycle; you remit through your employer account.

To see how this WCB premium fits into your complete picture, including employer CPP, EI, vacation pay, and provincial deductions, use our free Canadian Nanny Tax & Cost Calculator.

What WorkSafeBC Coverage Includes

If your nanny is injured at work and the claim is accepted, WorkSafeBC generally provides:

• Wage-loss benefits of about 90% of calculated net earnings (starting with the first scheduled shift missed after the day of injury in most cases)
• Medical and rehabilitation expenses
• Permanent disability benefits if the injury causes lasting impairment
• Death benefits for dependants in fatal cases

Your role as employer is to report the injury promptly, typically via Form 7 (Employer’s Report of Injury or Occupational Disease) within three days, and cooperate with WorkSafeBC’s review. Serious incidents and fatalities must be reported immediately by phone as well.

Ontario: WSIB (Workplace Safety and Insurance Board)

Ontario’s workers’ compensation system is administered by the Workplace Safety and Insurance Board (WSIB). Domestic employers in Ontario have specific rules under the Workplace Safety and Insurance Act, 1997 (WSIA) and WSIB policy on domestic workers.

WSIB Ontario: Mandatory Hours & Registration Rules

Domestic employees (nanny, babysitter, housekeeper, cook, gardener, and similar roles) are covered when they work, on average, more than 24 hours per week for one private household. In that case, registration is mandatory.

If the domestic works 24 hours or less per week for your household, coverage is not mandatory, but the worker may apply for optional insurance.

Other important details from WSIB policy:

• If hours vary but exceed 24 hours in most weeks, coverage is treated as continuous.
• Shared employment (two or more households employing the same worker at the same time for more than 24 combined hours per week) requires registration under a single WSIB account.
• Private individuals who hire an attendant for personal/physical care of someone elderly, ill, or with special needs are generally not required to register (optional coverage may still be available).

When to Register for Ontario WSIB

When mandatory coverage applies, register with the WSIB within 10 calendar days of hiring the domestic employee.

How to Open a WSIB Account

1. Go to wsib.ca and complete online registration.
2. Identify the activity as a private household hiring a domestic employee (NAICS 814110 – Private households is the classification WSIB references for this activity).
3. You will receive a WSIB account number and an assigned premium rate.

Premium Rate for Domestic Employers

Ontario does not publish a single flat “nanny rate” for every household. WSIB assigns rates by class/subclass and experience. For 2026:

• The province-wide average premium rate is $1.23 per $100 of insurable payroll.
• The maximum insurable earnings ceiling is $121,700.

Confirm the rate on your WSIB premium rate statement after registration.

Reporting and Remittance

WSIB premiums are reported and paid on the schedule assigned to your account. Report actual insurable earnings through My WSIB / online services.

If your nanny is injured and a reporting obligation applies (for example, they need health care beyond first aid, miss work, or earn less than regular pay), you generally must submit an Employer’s Report of Injury/Disease (Form 7) so the WSIB receives it within three business days after you learn the obligation applies. Late reporting can trigger penalties (commonly $250, or $1,000 if reported more than 30 calendar days late).

Interaction with Ontario Employment Standards

Registering with WSIB is separate from your obligations under the Employment Standards Act, 2000 (ESA). WSIB covers workplace injuries; the ESA covers minimum wage, overtime, public holiday pay, and termination notice. Both can apply to domestic employers in Ontario.

For full compliance with Ontario domestic employment law, see our guides on Ontario Nanny Statutory Holiday Pay and Drafting a Canadian Nanny Employment Contract.

Quebec: CNESST

Quebec’s workers’ compensation system is operated by CNESST (Commission des normes, de l’équité, de la santé et de la sécurité du travail), which also enforces labour standards and equity. CNESST combines functions that other provinces split across separate agencies.

CNESST Quebec: Domestic Worker Hours & Rules

An individual who employs a domestic worker must register with CNESST for occupational health and safety insurance when the worker’s contract provides at least:

• 420 hours over a 12-month period, or
• 30 hours a week over 7 consecutive weeks

Below those thresholds, automatic coverage generally does not apply, though optional protection may be available. Temporary foreign workers hired as domestics are treated as requiring employer registration.

Domestic help services for individuals are classified in unit 77040.

When and How to Register with CNESST

CNESST’s general employer rule is to register within 60 days of the first day of work of your first worker (you may also register up to 30 days before their start date). Use the CNESST employer registration path for a particulier qui emploie un travailleur domestique at cnesst.gouv.qc.ca.

After registration you receive a classification decision with your premium rate and an initial assessment notice.

CNESST Premiums (2026)

For 2026, the published unit rate for 77040 – Services d’aide domestique aux particuliers is $2.04 per $100 of insurable wages (federal-jurisdiction particular rate for that unit is separately listed at $1.86 where it applies).

Premium formula:

Premium rate × Insurable wages ÷ 100

Before March 15 each year, file a Statement of Wages. CNESST then issues a reconciliation assessment. Household employers of domestics are not required to remit these OHS premiums through periodic Revenu Québec source-deduction remittances, even if they already remit income tax, QPP, and EI/QPIP through Revenu Québec.

CNESST as a Dual Agency

Unlike WorkSafeBC and WSIB alone, CNESST also enforces Quebec’s labour standards (Act respecting labour standards). A wage, notice, or termination dispute can be pursued through CNESST separately from an occupational injury claim under the Act respecting industrial accidents and occupational diseases (LATMP). Prevention duties also arise under Quebec’s OHS statute (LSST). Registration and good records matter across those regimes.

Alberta: WCB (Workers’ Compensation Board)

Alberta’s workers’ compensation board is WCB-Alberta, operating under the Workers’ Compensation Act (Alberta).

The Alberta Domestic Employer Exception

Alberta is the one major province with a clear exemption for most private domestic employers. Private homeowners who directly hire domestic help exclusively in the private residence (including nannies, babysitters, cooks, and housekeepers) fall under exempt industry 87300 – Domestic Help – Homeowner Only. Mandatory WCB coverage does not apply in that situation.

This means that if you hire a nanny to care for your children in your Alberta home, you are generally not legally required to open a WCB account.

Why You Should Still Consider Voluntary Coverage

The exemption does not remove injury risk; it means you may bear civil liability if your nanny is injured and no WCB coverage is in force. WCB-Alberta allows employers in exempt industries to apply for voluntary coverage for their workers.

Important terminology: this is not the same as personal coverage (optional coverage for proprietors/directors). Under industry 87300, WCB states that personal coverage for the homeowner is not available; voluntary coverage protects the workers.

To enquire about voluntary coverage, contact WCB-Alberta at wcb.ab.ca.

Alberta-Specific Note

Even without mandatory WCB registration, Alberta domestic employers still have responsibilities under:

• The Employment Standards Code (Alberta): minimum wage, overtime, termination notice
• The Occupational Health and Safety Act (Alberta): general duty to provide a safe workplace

A Quick-Reference Registration Summary

Province	Board	Domestic employer mandatory?	Registration timing	2026 rate notes
British Columbia	WorkSafeBC	Yes if thresholds met (typically ≥8 hrs/wk ongoing nanny help; ≥15 hrs/wk before-/after-school care)	Register when you become an employer; apply ~30 days before start	Confirm assigned CU; domestic childcare-related CU 764029 publishes $1.46 / $100; province average $1.55 / $100
Ontario	WSIB	Yes if domestic works >24 hrs/wk (average) for your household	Within 10 calendar days of hiring	Confirm class rate on your statement; province average $1.23 / $100; max insurable earnings $121,700
Quebec	CNESST	Yes if contract meets ≥420 hrs/year or ≥30 hrs/wk for 7 consecutive weeks	Generally within 60 days of first day of work	Unit 77040 published rate $2.04 / $100
Alberta	WCB-Alberta	No for typical private domestic help (industry 87300 exempt)	N/A unless you elect voluntary worker coverage	Voluntary coverage available; personal coverage for homeowner not available under 87300
All other provinces	Provincial WCB	Varies; confirm locally	Varies	Varies

Confirm current thresholds and the rate on your account before budgeting. Boards update rates and maximums annually.

Common Registration Mistakes

Registering Late After a Claim

The most expensive mistake is waiting until an incident to register. If coverage was mandatory and you were unregistered, the board may still process the worker’s claim while assessing unpaid premiums and holding you liable for costs that insurance would otherwise have funded. You lose the protection that timely registration is meant to provide.

Reporting Wages Incorrectly

Workers’ compensation premiums are assessed on gross insurable / assessable wages, which generally include base pay, overtime, statutory holiday pay, and vacation pay (subject to each board’s rules and annual maximums). Employers who report only base wage often receive a correction at year-end reconciliation. RoostPay’s payroll reports separate each wage component, making annual WorkSafeBC, WSIB, or CNESST wage declarations easier to support. When reporting assessable payroll to your provincial workers’ comp board, having pre-aggregated numbers saves hours. Learn how our nanny payroll service tracks provincial assessable earnings across every pay run.

Assuming CRA Registration Is Enough

Registering for a CRA payroll account (required for CPP and EI remittances) does not satisfy your provincial workers’ compensation obligation. CRA and your provincial board are separate registrations. Many domestic employers correctly register with CRA but miss the provincial board entirely.

What Happens If Your Nanny Is Injured

If your nanny is injured while performing work in your home, follow these steps regardless of province:

1. Ensure immediate care: First aid and, if needed, emergency medical attention.
2. Report the incident to the board when required: WorkSafeBC and WSIB commonly require employer reports within about three days / three business days once a reporting obligation applies. Do not wait.
3. Complete the employer report: WorkSafeBC Form 7, WSIB Form 7, or the CNESST employer injury report process. Forms and portals are on each board’s website.
4. Keep records: Dates, shifts, wages, and the circumstances of the incident. RoostPay’s shift logs create an accurate, timestamped employment record that is invaluable in claims processing.
5. Cooperate with the investigation: Respond promptly to the board’s requests. Failure to cooperate can result in additional penalties.

Staying Compliant Year After Year

Registration is a one-time event, but compliance is ongoing. Each year you will typically:

• Declare actual wages to your provincial board (WorkSafeBC and WSIB require payroll reporting/reconciliation; CNESST requires a Statement of Wages before March 15)
• Pay any balance or receive a credit based on the difference between estimated and actual wages
• Update your account if your nanny’s hours or wages change significantly (including changes that push you across a provincial hour threshold)

Keeping accurate payroll records makes this annual process seamless. When your payroll platform already tracks every shift, pay period, and wage component, your annual WCB declaration takes minutes rather than hours.

Start your free 30-day trial and gain access to Canada’s only household payroll platform that tracks shift-level records, generates T4 slips, and produces the wage reports your provincial workers’ compensation board needs at year-end, all in one place.

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Official Government & Workers’ Compensation Sources