Hazardous Materials Information Review Commission
Symbol of the Government of Canada

Institutional links

Graphic of HMIRC logo

Why File a Claim?

Why does a Claim for Exemption have to be filed?

The Workplace Hazardous Materials Information System (WHMIS) requires that chemical suppliers provide employers with information on the hazards of materials produced or used in Canadian workplaces. This is accomplished through product labels and material safety data sheets (MSDS). Employers may then use this information as the basis on which to prepare workplace MSDS and labels, and provide worker training. A product's MSDS must fully disclose such information as all hazardous ingredients in the product, its toxicological properties, any safety precautions workers need to take when using the product and the first aid treatment required in the case of exposure.

When a supplier or employer wants to protect confidential business information (CBI), such as the chemical identity of one or more trade-secret hazardous ingredients, they must file a claim for exemption with the Hazardous Materials Information Review Commission (HMIRC) in order to be exempt from having to disclose that information. A registry number, issued by HMIRC, is required to be shown on the MSDS and for certain claims, on the label, for that product to be legally available on the Canadian market.

What Kinds of Information Can Be Claimed?

A supplier, within the meaning of the Hazardous Products Act (HPA), may file a claim in relation to:

  • the chemical identity and/or concentration of a trade- secret hazardous ingredient (ordinarily required to be disclosed on the MSDS);
  • the name of a toxicological study that identifies a trade-secret hazardous ingredient (ordinarily required to be disclosed to, and upon the request of, an inspector, customer or user).

An employer who is subject to the Canada Labour Code (CLC) or provincial/territorial occupational safety and health (OSH) legislation may claim for:

  • the chemical identity and/or concentration of a trade-secret hazardous ingredient (ordinarily required to be disclosed on the MSDS);
  • the name of any toxicological study that identifies a trade-secret hazardous ingredient (ordinarily required to be disclosed to, and on the request of, an inspector, worker, health and safety representative, etc.);
  • the name of a controlled product (ordinarily required to be disclosed on the MSDS and on the label);
  • information that could be used to identify the supplier of a controlled product (ordinarily required to be disclosed on the MSDS and, in certain cases, the label).

Preparing a Claim for Exemption

First steps:

1. Determine if the product is a controlled product within the meaning of the Controlled Products Regulations (CPR).

2. Determine if any of the information that is required to be disclosed on the MSDS or label is considered a trade secret or proprietary.

3. Make a determination as to whether to file a supplier claim under the Hazardous Products Act (HPA), or an employer claim under the Canada Labour Code (CLC) or provincial/territorial occupational safety and health (OSH) legislation.

4. Classify the product and prepare the required MSDS and label.

5. Provide all the information necessary for HMIRC to register and review a claim for exemption. HMIRC has developed a new Claim for Exemption form which should be used for this purpose. This new form includes a section which automatically performs the calculation of fees for both "original claims" and for "re-filed claims".

Last steps:

6. Send the claim for exemption form, the MSDS (and in certain cases, the label) via courier or registered mail along with the applicable fees to HMIRC at the following address:

Hazardous Materials Information Review Commission
Client Services
427 Laurier Avenue West, 7th floor
Ottawa, Ontario
Canada K1A 1M3

7. Payment Methods: The fee is payable, in Canadian funds , to the Receiver General for Canada by cheque, money order or credit card . For credit card payments, please complete the Credit Card Authorization Form found on page 7 of the Claim for Exemption Form Opens new window (Opens in a new window) [PDF, 111 Kb].

MSDS Checklist

There are a number of mandatory disclosure requirements under the Controlled Products Regulations (CPR) that can be verified by a quick scan of a material safety data sheet (MSDS). HMIRC has developed an MSDS checklist to assist claimants in a voluntary review of their MSDS. Claimants are encouraged to use this checklist prior to submitting their MSDS to the compliance review process.
Click here to access the MSDS checklist.


Fee Structure

The following fees apply to each submission and are based on the number of claims of each type submitted at one time.

Original Claims:

The first 15 original claims filed in a single submission cost $1,800 each.

The next 10 original claims filed in a single submission, from 16 to 25, cost $400 each.

All original claims in excess of 25 filed in a single submission cost $200 each.

Re-filed Claims:

The first 15 re-filed claims filed in a single submission cost $1,440 each.

The next 10 re-filed claims, from 16-25, filed in a single submission cost $320 each.

All re-filed claims in excess of 25, filed in a single submission, cost $160 each.


Small Business Fees:

A 50% reduction for a small business that meets certain criteria is available. Please consult the Hazardous Materials Information Review Regulations (HMIRR) to obtain more information.

Eligibility as a small business

If the answer to both questions below is NO, the claimant is eligible to claim as a small business:

  1. Is the claimant's gross annual revenue, in the claimant's fiscal year immediately preceding the fiscal year in which the claim for exemption is filed, was more than $3,000,000 (CDN)?
  2. Does the claimant employ more than 100 employees?

Need Some Extra Help?

Why not view our Information Bulletins to find out more...

Issue 1 deals with approaches to developing a generic chemical identity for a confidential business information (CBI)-controlled product or ingredient.

Issue 2 responds to frequently-asked questions, including those related to claim withdrawals, and change in product ownership and its impact on claims for exemption.

Issue 3 covers the expiration of a three-year trade-secret exemption and how to re-file for a trade-secret exemption.

Issue 4 looks at background information, security measures, procedures for filing claims, reminders, and common questions and answers.