An Employers’ Guide to WHMIS 2025 SDS / MSDS Compliance
5 November 2025
If you’re managing a workplace in Ontario, whether it’s a shop floor, a job site, or an office with cleaning chemicals, December 14, 2025 needs to be circled on your calendar. That’s when the updated Hazardous Products Regulations (HPR) under WHMIS lock in, and every safety data sheet (SDS) (you might still call it an MSDS) has to follow new rules.
These changes come from the 7th (and parts of the 8th) edition of the Globally Harmonized System (GHS), and they’re not just red tape. They’re about making sure your people know exactly what’s in that can of spray adhesive or drum of solvent, and more importantly, how to work with them safely. Updating your paper binders by hand is a headache, but there may be a better way. But first, here’s what you need to know to keep your safety data sheets compliant—and your safety data sheets binder from becoming a liability.
What Employers Need to Do with Safety Data Sheets (SDS or MSDS) on or after Dec 14
After Dec 14, 2025, every safety data sheet on your site must follow the 2022 HPR. That means updating the safety data sheet sections, especially Section 2 (Hazard Identification) and Section 11 (Toxicological Information), to include new hazard classes like flammable aerosols (think spray paint or expanding foam) and desensitized explosives (some sealants). The safety data sheets meaning hasn’t changed, as it is still the go-to document for what’s in a chemical, how to handle it, and what to do if things go wrong. Now it’s got more detail, clearer pictograms, and stricter wording.
If you still have old format MSDS sheets, you’ve got to replace them. If you buy anything after December 14, the supplier has to give you a WHMIS-compliant safety data sheet in the new format, but at the end, employers are responsible for updating their safety data sheets to ensure employees always have access to the most recent information for regulated chemicals. During the transition (which started December 15, 2022), SDS binders could mix old and new formats, but after the deadline, everything has to align with the new requirements.
Under OHSA, your safety data sheets binder (or digital version) has to be easy to find. Excuses like “it’s somewhere in the office” will not be accepted. Workers need access in seconds, whether it’s a paper copy in a weatherproof sleeve or a tablet in the gang box. New hazard info comes out? You’ve got 90 days to update the SDS. And yes, WHMIS training has to cover the new safety data sheet sections, pictograms, and hazards. Keep those sign-off sheets, Ministry of Labour (MLITSD) inspectors will ask.
Why Manual SDS Management is a Nightmare
Trying to keep a safety data sheets binder up to date by hand is brutal. You’re calling suppliers, printing new sheets, hole-punching, swapping out old ones, and hoping the guy on night shift didn’t grab the wrong version. One outdated SDS in a binder on your shop floor could easily put you at risk of being out of compliance. With MLITSD doing spot checks, that’s not a risk worth taking.
We built sdsLite to be a game-changer, helping you stay in compliance, while shouldering the administrative burden, with some customers reporting up to 200 hours saved per year (spoiler alert: that’s 200 more hours they got to spend improving safety measures, implementing wellness programs and generally building their employer brand). It checks for new safety data sheet versions and regulatory updates once every 90 days so administrators no longer have to ask the question “did the supplier send the new one?”. It organizes safety data sheets by location, so your Toronto site and your Kitchener yard aren’t sharing the same messy folder but rather have curated electronic binders specific to the chemicals in their work location.
As an improvement to offline binders, if you are a Location Administrator in sdsLite, you can instantly check how many regulated chemicals you have on site, which are the most accessed SDSs, which corrosive chemicals are at a location and more… data points that can give you valuable insights to drive your safety program, and put those precious safety dollars where they will be most useful. Your WHMIS inventory is one click away.
Workers scan a QR code on the tool crib, chemical drum, or bulletin board and the latest SDS pops up on their phone - No login, no digging through a binder and it meets accessibility requirements instantly.
Get your SDS Binder (or digital version) Ready
We built sdsLite to be budget friendly - around CAD 1800/year per location, handles up to 200 safety data sheets, and you’re live in about five business days. Sign up, tell them what chemicals you use, and they load the current safety data sheets (Canada versions if you are in Canada, but other countries are available too).
Want to learn more? Check out the sdsLite product page. Get ahead of December 14, and your safety data sheets binder won’t just be compliant, it will actually work for you.
About the Author
Eric Morris is an accomplished safety solutions expert with over 18 years of experience in designing and building innovative safety systems. As an Electrical Engineer with a Master's degree in Artificial Intelligence, he brings a unique blend of technical expertise and cutting-edge AI knowledge to the field of workplace safety. Eric is the Founder of Hypertrain.ai.