Your company requires full labels on every decanted container, even ones used right away. Is this allowed?
WHMIS: Workplace labels and other identification
When a workplace label is needed (decanting, products made on site, lost labels), the decanting exceptions, what a workplace label must say, and other means of identification.
- No sign-up
- Every answer explained
- Independent · not a government site
- 15 questions
- Topic drill
Study reference: CCOHS OSH Answers: WHMIS fact sheets (revised 2026-05-28), Ch. 7 WHMIS – Labels — Types of labels, workplace labels, other identification
All 15 questions in this test
Every question and its answer choices. The correct answers and explanations appear when you take the test above.
Your company requires full labels on every decanted container, even ones used right away. Is this allowed?
- Only if the supplier agrees in writing
- No, only Health Canada can set label rules
- No, it conflicts with WHMIS law
- Yes, companies may go beyond WHMIS minimums
The supplier label on a drum has been torn and can no longer be read. What must happen?
- Write the date on the drum
- Move the drum to a storage room and keep using it
- Put a new supplier or workplace label on it
- Keep using the drum as is
Who is responsible for making sure the correct workplace labels are used?
- The employer
- The delivery company
- Health Canada
- The supplier
During a WHMIS workplace inspection, which question about labels is on CCOHS's sample checklist?
- Are all labels the same size on every product in stock?
- Are labels printed in a single colour?
- Are labels signed by each worker?
- Are decanted products not used immediately labelled?
Which item is required on a workplace label?
- A product name matching the SDS
- The worker's employee number
- The supplier's full mailing address
- The product's price
Which situation requires a workplace label?
- A hazardous product made at the workplace and used there
- A sealed product kept in its supplier container
- A product sitting on a supplier's truck
- A product in a store for home use
You pour a small amount of solvent into a cup and use all of it right away. Is a workplace label needed on the cup?
- Yes, always, for any container
- Only if the solvent is flammable
- Yes, unless the cup is glass
- No, not if it is used immediately
You decant a product that only you will use, all within this shift. What is the minimum identification on the container?
- The product identifier (name)
- A full supplier label
- The supplier's phone number only
- Nothing at all
Your workplace identifies some hazardous products with colour-coded tags instead of labels. What must workers receive?
- A copy of the tag manufacturer's invoice
- A new supplier label for each tag
- Training on how to read that system
- Nothing, since tags need no explanation
You decanted a product for your own use, but a co-worker will also use it later. What is required?
- Only the product name
- Nothing, since you poured it
- A full workplace label
- A note on the whiteboard
An inspection compares the label and the SDS for the same product. What should be checked?
- That the information on the two matches
- That the SDS is shorter than the label
- That both use the same font
- That both are printed on the same day
What are the two main types of WHMIS labels?
- Supplier labels and workplace labels
- Danger labels and warning labels
- Shipping labels and price labels
- Indoor labels and outdoor labels
You pour a cleaner from its original jug into a spray bottle that will be used by the whole crew over the week. What does the spray bottle need?
- A workplace label
- No label at all
- Only the worker's initials
- A copy of the shipping invoice
Who sets the specific rules for workplace labels?
- The product's manufacturer
- Health Canada's supplier rules under the Hazardous Products Act
- Each worker individually
- The province or territory, or the Canada Labour Code
Besides the product name, what must a workplace label give?
- Safe handling precautions and a reference to the SDS
- The hazard class and category numbers
- A bilingual list of ingredients
- The supplier's 24-hour emergency hotline number only
Workplace labels and other identification: key rules to remember
Our summary of what the official handbook says on this topic, in our own words. Read it before or after the practice questions above, then check the original chapter. Read the official chapter ↗
When a workplace label is required
- When a hazardous product is produced (made) at the workplace and used there.
- When it is decanted (transferred, poured) into another container.
- When a supplier label is lost or becomes illegible.
When a workplace label is not necessary
- Product poured into a container and used immediately.
- Product "under the control of the person who decanted it": the person who poured it is the only user and it is used within one shift — a full workplace label may not be needed, but the container must still show the product identifier (name).
- If not used right away, or more than one person controls it, a full workplace label is required.
- Companies may set stricter rules than WHMIS; workplace label rules are set by the province/territory (or Canada Labour Code for federal workplaces).
Workplace label content
- Product name matching the SDS; safe handling precautions (may include pictograms or other supplier label information); a reference to the SDS if available.
- Ontario guide adds: no fixed format/language; precautions may be in pictures, words, pictograms, combined with worker education.
Other identification
- Products can also be identified with a mark, sign, stamp, sticker, seal, ticket, tag or wrapper (attached, imprinted, stencilled, embossed). Workers must be trained on any such alternative system.
Inspections checklist (labels)
- Containers and labels in good condition; no unlabelled hazardous products; decanted products not used immediately by the person who decanted them have workplace labels; vessels and pipelines labelled per WHMIS; SDS and label information match.
Pipes, vessels, placards (for context)
- Products in pipes, process/reaction vessels, tank cars etc.: identified by any clear means (colour coding, labels, placards, piping diagrams, signs) plus worker education.
- Placard allowed for products not in a container etc.; placard carries workplace label information.
Study the Workplace labels and other identification rules as flashcards →
Other topics
- What WHMIS isWhat the Workplace Hazardous Materials Information System is, its four main parts, how it lines up with the GHS, what counts as a hazardous product and which products are excluded.
- WHMIS law and enforcementWHMIS 1988, WHMIS 2015 and the December 2022 amendments, the Hazardous Products Act and Regulations, who enforces WHMIS in each jurisdiction and what an inspector checks.
- Supplier, employer and worker dutiesWho counts as a supplier, manufacturer, importer or distributor, what employers must provide, what workers must do, and the role of the health and safety committee.
- WHMIS education and trainingThe difference between education and site-specific training, who must be trained, what it must cover, the four questions every worker should be able to answer, reviews and refreshers.
- Hazard groups, classes and categoriesThe physical and health hazard groups, how classes group similar products, how categories and types show severity, and what changed in the 2022 amendments.
- Physical hazard classesFlammables, oxidizers, gases under pressure, pyrophoric and self-heating products, water-reactives, organic peroxides, corrosive to metals, combustible dusts, simple asphyxiants and chemicals under pressure.
- Health hazard classesAcute toxicity, skin and eye damage, sensitizers, mutagens, carcinogens, reproductive toxicity, target organ toxicity, aspiration hazard and biohazardous infectious materials.
- WHMIS pictogramsThe red-bordered diamond pictograms described in words: flame, flame over circle, gas cylinder, corrosion, exploding bomb, skull and crossbones, health hazard, exclamation mark and the biohazard symbol, plus classes with no pictogram.
- Supplier labelsThe required parts of a supplier label, the two signal words, hazard and precautionary statements, bilingual rules, small-container exemptions and the 180-day update rule.
- Safety data sheets (16 sections)What an SDS is, the 16 sections in their required order, which sections workers use most, update rules, and the employer's duty to keep SDSs available.
- Safe handling and storageEveryday precautions by pictogram: ventilation, ignition sources, incompatibles, gas cylinders, corrosives, toxic products, storage height, cabinets and controls such as substitution and PPE.
- Emergencies, spills and first aidWhere emergency information is on the SDS, reporting leaks and spills, fire and evacuation basics, eyewash and showers, and standard first-aid steps by route of exposure.
- Ontario WHMIS rules (Regulation 860)How Ontario applies WHMIS through the Occupational Health and Safety Act and Regulation 860: who is covered, decanted containers, SDS access, annual review of training, exemptions and hazardous waste.