March 23, 2026   Quick Guide: 2026–2028 OSHA HazCom Deadlines (as of March 2026) May 19, 2026: Deadline for manufacturers to update labels for pure substances. Nov 20, 2026: Deadline for practices to update written HazCom programs and staff training for substances. May 19, 2028: Final deadline for practices to be fully compliant for all mixtures (disinfectants, resins, etc.). If you came here after hearing that a major OSHA deadline is coming up in May 2026, then you can exhale. You aren’t late (yet)… although if you are reading this closer to November, you can panic [a little]. The changes are actually not terribly complex for your practice, as we will explain in this blog, so you can be prepared.   What is GHS, and why does it exist? The Globally Harmonized System can be thought of as a standardized or universal language that is aligned with GHS Revision 7. Since chemical manufacturing occurs all over the globe, something made in one country might use different warning symbols and formats than something made here in the U.S., which can be confusing, if not problematic, for those who use them.  OSHA is updating its standards so that every chemical label and Safety Data Sheet (SDS) uses the same icons (called pictograms) and formatting worldwide, helping your team to easily identify what is what, no matter where the product came from.   Why are there so many deadlines? There are really two different audiences for the deadlines: manufacturers and consumers of the chemicals. There are also two waves of chemical classes with different priorities: Pure Substances and Mixtures. Wave 1 – Pure Substances (Deadline: Nov 20, 2026) This first wave covers “pure” chemicals, or products that have only one main ingredient. For many practices, this list tends to be short including (but not limited to) medical gas – like 100% Oxygen or Nitrous Oxide, bulk alcohol – like 99% Isopropyl Alcohol, etc. Wave 2 – Mixtures (Deadline: May 19, 2028) Most products are likely “mixtures” of several chemicals. Because these are more complex to re-label, OSHA has given everyone until 2028 to reach full compliance. This includes most surface disinfectants, cleaners, clinical materials, etc. What if we mix things ourselves? Most mixtures you do in-house are probably to dilute other “mixtures” (ie: secondary container labeling). But say, for instance, you still mix your own amalgam – you have a unique situation where you’re dealing with two different deadlines. Your mercury needs updated labels by Nov 2026, but the alloy you’re mixing with would fit the mixture deadline, as would the final product.   When will we see changes? You might have heard about a May 19, 2026, deadline. That is the deadline for the manufacturers to have their pure substance labels ready. Here is when you can expect to see the changes in your orders: May 2026 (Manufacturer Deadline) New labels for pure substances. Nov 2027 (Manufacturer Deadline) New labels for all mixtures.   Should I be doing anything now? Just be aware of the changes and try to notice them. You may already see some manufacturers have these changes live; others may happen by the deadline. The key is effective Safety Data Sheet (SDS) management. When a new version of an SDS arrives, simply swap it out in your library (whether that’s a physical binder or stored digitally). Replacing them as they come in is much easier than doing a mass update in November. If you haven’t received new sheets for your pure substances by this summer, you can reach out to your vendor to request the GHS-aligned version. The other change you’ll notice is products adding the GHS hazard pictograms where previously they had none or few. When you spot these, show them to your team during a morning meeting and explain what each icon means. It’s a simple way to keep staff informed and safe. Beyond that, start thinking about updates to your OSHA Hazard Communication training.   Need Help? We get it, you didn’t get into healthcare to become an OSHA expert… But we did. If you want to stay up to date on the deadlines and get the easy button covered for OSHA compliance, our platform and our compliance experts are here to help you do exactly that. If you’d like to learn more about Abyde and how we can help, check out our OSHA for Healthcare platform.