If you hire a domestic worker, nanny, or caregiver in Ontario who works more than 24 hours a week, you are legally considered an employer under the Workplace Safety and Insurance Act. You must register with the WSIB within 10 days of hiring to avoid severe penalties and personal liability.
Welcoming a nanny, senior caregiver, or housekeeper into your home can provide immense relief for busy families. Whether you reside in a bustling Toronto neighbourhood or a quiet suburb in Ottawa, hiring domestic help makes daily life manageable. However, many homeowners are entirely unaware that bringing regular help into their private residence legally transforms them into an employer. In Ontario, the Workplace Safety and Insurance Board (WSIB) mandates strict rules regarding when a private family must provide workers’ compensation coverage.
As of May 2026, the laws regarding domestic workers remain rigorously enforced. A common misconception is that paying someone “under the table” or treating them as an independent contractor absolves the family of legal responsibility. If your domestic worker suffers a slip and fall, a burn, or a back injury while lifting a child, and you are not properly registered with the WSIB, you could be personally sued for their medical expenses and lost wages. Consulting with an employment lawyer or a WSIB legal specialist can help you understand your exact obligations before a tragic accident occurs.
Step-by-Step Process in Ontario
Navigating the WSIB registration process as a private household might feel overwhelming, but the steps are generally straightforward. Whether you live in Mississauga, Hamilton, or London, the provincial guidelines apply equally across all regions.
Step 1: Determine If You Meet the 24-Hour Threshold
⏱ The crucial metric for domestic workers in Ontario is the “24-hour rule.” If you employ one or more domestic workers (such as nannies, housekeepers, or regular babysitters) whose combined working hours exceed 24 hours per week, WSIB coverage is mandatory. If you hire someone for only 10 hours a week to clean, registration is optional but still highly recommended to protect yourself from civil lawsuits.
Step 2: Gather Employer and Employee Information
Before you contact the WSIB, you must gather all necessary details. You will need your Social Insurance Number (SIN) or Canada Revenue Agency (CRA) business number if you have one. You must also have your employee’s full legal name, their start date, and a clear estimate of their annual gross payroll. Having this information ready ensures a smooth registration process.
Step 3: Register Your Household with the WSIB
You have exactly 10 calendar days from the day your nanny or caregiver starts working to formally register as an employer. You can complete this registration online through the WSIB’s portal or by calling their employer service centre. Once registered, you will be assigned a specific employer account number and a premium rate classification tailored to domestic employment.
Step 4: Report Payroll and Pay Premiums Regularly
💵 Once your account is active, you are legally required to report your domestic worker’s earnings and pay your WSIB premiums. Depending on your payroll size, this reporting is usually done on a quarterly or annual basis. Accurate record-keeping is essential, as the WSIB frequently audits employers, and discrepancies can lead to administrative penalties.
How Much Does it Cost in Ontario?
Understanding the financial commitment is vital for any family budgeting for domestic help. WSIB premiums are calculated as a percentage of your worker’s gross earnings.
- WSIB Premium Rates: For domestic workers, the premium rate generally hovers around $1.50 to $2.00 CAD per $100 of assessable payroll. For example, if you pay your nanny $40,000 CAD a year, your WSIB premium would be approximately $600 to $800 CAD annually.
- Registration Fees: $0 CAD. The WSIB does not charge a setup fee to open an employer account.
- Late Registration Penalties: Failing to register within 10 days can result in late filing penalties starting at $250 CAD, plus retroactive premium charges with accumulated interest.
- Lawyer / Legal Consultation: If you are unsure about employment contracts or CRA deductions, consulting a local law firm typically costs between $300 and $600 CAD for a comprehensive review.
How Long Does the Process Take?
The actual online registration process only takes about 20 to 30 minutes to complete. Once submitted, the WSIB generally processes your application and issues your official employer account number within 5 to 10 business days. If an injury occurs on the job, you must submit a Form 7 (Employer’s Report of Injury) within three strict calendar days of learning about the accident.
Frequently Asked Questions (FAQ)
Does the WSIB cover live-in and live-out nannies equally?
Yes. The rules apply identically whether the caregiver lives in your home or commutes daily. If they work more than 24 hours a week for your family, WSIB coverage is mandatory.
What if I hire a nanny through an agency?
If the agency pays the nanny directly, issues their T4, and handles CRA deductions, the agency is generally the employer and must provide WSIB. However, you should always demand a WSIB Clearance Certificate from the agency to ensure you are not held liable.
Can my housekeeper just sign a waiver saying they won’t sue?
No. Under Ontario labour laws, workers cannot sign away their legal right to workers’ compensation. Any waiver attempting to bypass the Workplace Safety and Insurance Act is legally void and will not protect you in court.
What if they work exactly 20 hours a week?
If they work less than 24 hours a week, WSIB coverage is not mandatory. However, you can opt into “by application” coverage. This is highly recommended to protect yourself from personal injury lawsuits if an accident happens.
Do I still have to pay CRA payroll taxes?
Yes. WSIB is entirely separate from the CRA. If you are an employer under WSIB rules, you must also set up a CRA payroll account to deduct Employment Insurance (EI), Canada Pension Plan (CPP), and income tax from your domestic worker’s paycheque.
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