Ontario Workplace Labels After Decanting: the Two Exceptions

September 29, 2026·13 min read

A worker pours a hazardous cleaning product from its supplier bottle into a smaller spray bottle. The original bottle has a supplier label. The new bottle may not. In an Ontario workplace covered by the province's WHMIS rules, that transfer usually creates a workplace-label duty. There are narrow exceptions for certain directly filled portable containers, but a manager should test every condition before assuming the new bottle can remain without a label.

This guide addresses the Ontario decision under Regulation 860, especially section 10. It is for an employer or supervisor deciding how to identify a hazardous product after transfer from a supplier container. The broad Complys Canada WHMIS overview explains the national system. Provincial employer labelling rules and exceptions require a narrower owner. Do not copy the Ontario exceptions into another province's procedure without checking that province's law. Special laboratory samples, some exempt products and piping systems have their own provisions and are not decided by this ordinary portable-container guide.

Start with the ordinary rule

Ontario's Regulation 860, section 10, provides that when a hazardous product received in a supplier container is transferred to another container, the employer must ensure the second container has a workplace label. The worker who makes the transfer may physically attach the label under workplace procedure, but the regulation places the duty on the employer. The simple default is therefore to label a decanted container before it becomes a general-use, stored or shared container.

The supplier label remains on the original container. The transfer does not give an employer permission to alter that original label while hazardous product remains in the supplier container. If a supplier label on a received container becomes illegible or is removed, the regulation has a separate replacement rule in section 8. The employer must replace it with a supplier or workplace label, subject to the applicable details of that provision. Keep these two situations distinct: labelling a new container after transfer and replacing a lost or unreadable label on an existing container.

Do not rely on bottle colour or a shelf position to identify a product that moves between workers or shifts. Those cues can be changed easily and can be unclear during a spill, an emergency or relief cover. A local system may use colour as a supplementary cue, but it does not automatically satisfy section 10's ordinary workplace-label requirement. The first question is whether the material is a hazardous product under the applicable WHMIS framework and whether the transfer described in section 10 occurred. If the product or use falls under a special application or exception, evaluate that provision rather than stretching the ordinary decanting rule.

The directly filled portable-container exception

Section 10 contains an exception for a portable container filled directly from a labelled source container. A supplier or workplace label, or another specified label allowed by the regulation, must be on the source. The exception is not a blanket statement that any small bottle can be left unlabelled. The Ontario ministry's WHMIS guide explains the two alternatives in the section.

The first alternative requires all three of these conditions:

1. The hazardous product remains under the control of, and is used exclusively by, the worker who filled the portable container. 2. It is used only during the shift in which that worker filled the container. 3. The contents of the portable container are clearly identified.

All three are needed for this route. Same-shift use by itself does not excuse a bottle whose contents are unclear. A label-free bottle passed to a colleague is no longer under the exclusive use of the worker who filled it. A bottle kept for tomorrow does not fit the same-shift condition. A container filled from another unlabelled bottle does not fit the directly-from-labelled-source premise. Managers should verify the actual workflow, not merely place a same-day sticker on a bottle that is stored and reused.

The requirement to clearly identify the contents remains even when a full supplier or workplace label is not required under this route. The ministry says no single form of identification is prescribed for that portable container. It recommends as good practice a chemical, common, generic, trade or brand name that workers understand. That recommendation should be presented as ministry guidance, not as an invented list of mandatory words. In a multilingual workplace, the employer should ensure the identification and related worker education actually communicate what the container holds.

The immediate-use alternative

The second alternative applies where all of the hazardous product in the portable container is required for immediate use, provided the directly-filled-from-labelled-source premise applies. This is distinct from the same-worker, same-shift route. Do not replace immediate use with a loose promise that the contents will probably be consumed soon. If a worker fills a bottle to put it on a cart for later jobs, it is difficult to treat all its contents as required for immediate use. The default workplace label is the defensible route when the facts do not clearly support the exception.

The ministry's decanted-products guidance describes the immediate-use and same-worker alternatives separately. A supervisor should ask which one is actually claimed. The answers determine what happens when a task is interrupted, a shift ends or another worker takes over. If the remaining product will be kept, shared or moved to another task, review whether the container now needs a workplace label. Do not treat an earlier moment of immediate use as permanent permission for an unlabelled stored bottle.

There is no requirement to seek a regulator waiver before using a condition that the regulation itself allows. There is also no broad exemption for containers smaller than a chosen volume. The facts about who filled it, the labelled source, control, use and clear identification matter. A company can choose to label all portable containers despite an available exception as a simpler local practice. That is a stricter employer process choice and should not be described as proof that the legal exceptions do not exist.

What belongs on an ordinary workplace label?

The Ontario ministry's explanation of workplace labels identifies three information elements. The product identifier should match the one on the safety data sheet. The label should provide information for safe handling. It should say that a safety data sheet is available if one has been supplied or produced. Some partly exempt products may not have an SDS, so the last element is qualified. A workplace label is not simply a photocopy of a supplier label; the employer has flexibility in format and language while meeting the applicable information duty.

Product identity is the first control. A shorthand used only by one employee may not let a colleague find the right SDS. Compare the identifier on the container to the SDS used in that workplace. If the supplier product is changed, a label with the old name may point a worker to the wrong handling advice. The transfer step should therefore include a quick check of the source container and the SDS identity. A barcode or internal stock number can help a system retrieve a record, but it should not obscure the product identifier that workers need to understand.

Safe-handling information should reflect the product and the way it is used. The ministry notes that precautions can be communicated with words, pictures, pictograms or another mode that works with worker education. A generic handle with care phrase may not tell workers how to avoid the actual hazard. A supervisor should make sure the label does not contradict current hazard or precaution information, and that workers know how to reach the SDS and follow the relevant controls. The label and SDS serve different purposes. A brief workplace label cannot replace access to the detailed SDS where one is required.

The regulation also expects labels to remain legible. A chemically resistant marker, suitable adhesive and a placement that stays readable through normal handling are practical choices. The law does not prescribe one brand of label printer or a digital approval system. When a label is damaged or unreadable, replace it under the applicable rule rather than assuming the container's history is obvious. If the contents cannot be confirmed, a worker should not guess from smell, colour or location. The employer should identify the product from reliable records or manage the container through its safe unknown-material procedure.

A transfer decision that works on the floor

The decision can be made at the moment of decanting. First, identify the product and check that the source container bears the required label. Second, decide whether the destination is a directly filled portable container. Third, ask whether all conditions of either section 10 exception will hold. If not, make and attach the workplace label. Finally, ensure the worker understands the safe-handling information and can obtain the relevant SDS.

| Question | If yes | If no | | --- | --- | --- | | Was the hazardous product transferred from a labelled source directly into a portable container? | Test the section 10 exceptions. | Use the ordinary labelling rule or examine another applicable provision. | | Will only the filling worker control and use it during that same shift, with contents clearly identified? | The same-worker exception may apply. | Test the immediate-use alternative or label it. | | Is all of the product in the portable container required for immediate use? | The immediate-use alternative may apply. | Attach a workplace label under the ordinary rule. | | Will it be stored, handed to another worker or used later? | Reassess; a workplace label will generally be the safer default. | Continue to check that the claimed exception's conditions remain true. |

The table is a practical decision aid, not a legal eligibility calculator. A workplace may have special cases, including laboratory samples and other products covered by distinct provisions. The employer should evaluate those facts under the appropriate section. Use the table to prevent routine misclassification, not to override the regulation or a site-specific professional decision about hazardous-product controls.

If several workers regularly refill identical bottles, preprinted workplace labels can make compliance easier. Match each label to the product actually transferred. A labelled shelf does not automatically label the individual container workers carry away. A central refill station can place the workplace label before a container leaves the station. These are suggested workflow choices. The law states the label duty and exceptions, not the staffing model or printer location.

What changes when work changes?

A one-worker bottle can become a shared bottle without changing its contents. That change can end the basis for the same-worker exception. A container intended for immediate use can become stored stock when a job stops. A product can be reformulated or replaced with a similarly named item. A label can become unreadable after repeated cleaning. Each change should trigger a fresh check rather than an assumption that the original decision lasts until the bottle is empty.

An employer can make this easier by training workers to ask three questions when they pick up a portable container: what is in it, who filled it from which labelled source, and why is there no workplace label? If the answer depends on same-shift exclusive use or immediate use, confirm that the facts still hold. If a worker cannot identify the contents, the same-worker exception's clear-identification condition is not satisfied. Do not send the bottle back into use merely because someone says it came from the cleaning cupboard.

Use the supplier label and SDS as authoritative product information. A label-making template can help standardise the workplace information, but staff must still select the correct product and safe-handling advice. A system that populates a field automatically cannot decide whether a partly filled container will be used exclusively by one worker for the rest of a shift. Keep the product-identification step connected to the actual physical transfer and destination.

The ministry's WHMIS guide also describes special applications for laboratory samples. Section 15 guidance uses identification and worker education rather than the ordinary workplace-label route for qualifying lab samples. This guide does not turn every decanted laboratory chemical into a normal section 10 bottle. Equally, a chemical used outside a qualifying special application should not be labelled a lab sample merely to avoid the ordinary duty. Route specialised cases to the relevant provision.

Records and training support the label

Section 10 does not prescribe a transfer log for every pour. An employer may nevertheless record recurring refill points, products, the current SDS source and the person responsible for replacing labels. That can make an inspection or product change less disruptive. Mark the log as local process, not as a provincial form requirement. Its value is that it helps a supervisor discover unlabelled stock bottles and inconsistent product names before a worker has to rely on them.

Training should make the decision understandable to the people doing the transfer. Workers need to know the default workplace-label rule, the exact same-worker and immediate-use conditions, how to clearly identify an exception container, and what to do when a label is lost or the contents are uncertain. This is more useful than teaching the word WHMIS while leaving refill practice untouched. The Ontario ministry's employer guide connects labels, SDS access and worker education as parts of the same system.

Do not treat a training signature as proof that all containers are correctly identified. Walk the actual work area. Check whether containers are shared after a shift, whether product identifiers match the SDS, and whether safe-handling information is still legible. If a worker has improvised a nickname, make sure it is replaced with clear identification. If a product is being transferred through piping or into a process vessel, examine the separate identification provisions rather than forcing a portable-bottle checklist onto it.

Common errors to avoid

Calling all small containers exempt. Section 10 has fact-specific portable-container alternatives. Size alone is not the test.

Treating same-shift use as the only condition. Exclusive control and use by the filling worker, plus clear identification, are also needed for that alternative.

Using the immediate-use exception for stock. A bottle filled for later tasks or storage does not automatically qualify because it was filled quickly.

Copying supplier details onto the wrong product. Check the actual source label and matching SDS before preparing a workplace label.

Leaving the new bottle with only a shelf sign. The ordinary rule concerns the transferred product's container. A sign may be a supplementary control but is not a substitute for testing the applicable label provision.

Using a Canada-wide statement for an Ontario exception. WHMIS is national in structure, but employer labelling rules are implemented through the relevant jurisdiction. Keep this page's section 10 test in Ontario.

The simplest routine is to label the new container unless the employer can explain the particular exception and keep its conditions true during use. That protects the worker who fills it, the worker who may later encounter it and the employer who must maintain a credible WHMIS system. It also avoids asking a supervisor to reconstruct yesterday's product transfer from a bottle with no clear identity.

For the national context, see the Complys Canada WHMIS overview. Businesses comparing compliance-record tools can visit Complys Canada and confirm current features against their own chemical information workflow. This article does not claim that Complys generates legally compliant workplace labels, matches products to SDSs or decides when an Ontario exception applies.