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Information you need to register your business

To register your business with the WSIB, you will need the following information:

Company information

  • legal name of company and trade name(s)
  • Canada Revenue Agency (CRA) Business Number
  • mailing, email and website addresses
  • phone and fax numbers
  • address, phone and fax number of each operating location
  • account number of any prior registered accounts with WSIB
  • name, location and phone number for a contact person who deals with payroll records (if different from your primary location)
  • bank name
  • description of your business activity (i.e. what is the nature of your business)
  • description of the product you produce, the goods you sell or the services you provide (we will use this information to determine your rate group and your premium rate)
  • an indication of your predominant business activity, if you have more than one
  • payroll Information for any other business activities you maintain
  • names and addresses of any associated employers/contractors, plus their WSIB account numbers, if possible

Owner/executive details

  • names, addresses, birthdates and official titles of directors or owners of the company (and proof of earnings if you will be requesting optional insurance).

Information about your employees

  • date the first employee was hired
  • number of employees

Payroll information

You will need to estimate your payroll information which is the insurable earnings you will pay your employees for the current year. This information is reported on your employees' pay stubs or T4 slips as gross earnings, including deductions for income tax, CPP and employment insurance. Insurable earnings can also include earnings not reported on a T4 such as room and board, bonuses and commissions.

If you own or operate a business in construction and need details about estimating your insurable earnings, read about Mandatory coverage in the construction industry.

Insurable earnings are subject to a maximum amount for each employee. For 2018, that amount is $90,300.

Who you are responsible for insuring

You are responsible for insuring the following individuals:

  • Anyone you employ in your business under a contract of service, including family
  • Full-time, part-time, seasonal or temporary employees, domestic employees, students, apprentices, learners and training participants
  • Yourself – if you are an independent operator, sole proprietor, partner or executive officer in the construction industry. See mandatory coverage in the construction industry for exceptions.
  • For details and exceptions on who must be insured, please see policy 12-02-01 Workers and Independent Operators.

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