By November 20, 2026, every employer that uses hazardous chemicals must update three things for any newly identified hazards: workplace labels, the written hazard communication program, and employee training. That's OSHA's updated Hazard Communication Standard (HazCom) deadline for chemical substances. If you run a small shop, you can get this done in a few focused days. What matters most is starting with the new safety data sheets your suppliers have already sent you.
What changed in OSHA's Hazard Communication Standard?
OSHA updated the standard (29 CFR 1910.1200) in 2024 to match Revision 7 of the UN's Globally Harmonized System (GHS). The changes include:
revised classification criteria for some hazards, such as skin and eye effects, flammable gases and aerosols a new hazard class for desensitized explosives new labeling rules for containers under 100 milliliters a requirement that chemical makers classify hazards based on "reasonably anticipated" downstream uses, not only the intended use (National Law Review)
For a shop that buys chemicals, the practical effect is simple. Your suppliers' safety data sheets (SDSs) and labels may now list hazards that your in-house labels and training don't cover.
When is the HazCom deadline for employers?
On January 15, 2026, OSHA pushed every compliance date back four months (Federal Register; OSHA). The current dates:
Who Substances Mixtures Chemical manufacturers, importers, distributors May 19, 2026 November 19, 2027 All employers (labels, written program, training) November 20, 2026 May 19, 2028
Do you mix or package chemical products yourself, such as coatings, cleaners or compounds that you sell? Then you may also be a "chemical manufacturer" under the rule, with its own obligations. If you're in a state-plan state, check whether your state adopted the federal dates. States aren't required to follow them (National Law Review).
What do I actually have to do by November 20?
The regulatory text says that by November 20, 2026, employers must "as necessary" do three things for newly identified physical, health or other hazards (Federal Register):
update any alternative workplace labeling update the written hazard communication program provide additional employee training
"As necessary" is the key phrase. Nothing changed for a chemical whose hazards didn't change. Here's how a plant manager can work through it.
Step 1: Collect and compare your SDSs
Pull every SDS you've received since spring. For each chemical you use, compare Section 2 (hazard identification) on the new sheet with the old one. Flag anything new. Ask in writing for any SDS a supplier hasn't sent, and keep a dated copy of each request.
Step 2: Fix your in-house labels
Check secondary containers, meaning spray bottles, transfer cans, tanks and batch tags. Make sure they show the product name and the hazards that are now on the SDS. Look closely at very small containers. Missing secondary labels are one of the first things shop owners say inspectors flag (Practical Machinist forum).
Step 3: Update your written HazCom program
Your written program should match what actually happens on your floor:
your current chemical list how you label containers where SDSs are kept and how employees get to them on every shift how you train new hires and how you train when a new hazard shows up
If your program is a template from years ago that names chemicals you no longer use, this is the time to rewrite it.
Step 4: Train and document
Train everyone who works with or near a chemical that has a newly identified hazard. Cover what the hazard is, how the label and SDS show it, and how to protect themselves. Record names, dates and the topic. That roster is your proof.
Why does this matter for a small manufacturer?
Hazard communication was the most frequently cited general industry standard in OSHA's FY2026 data (J.J. Keller). It ranked #2 overall, behind construction fall protection, with 1,961 citations (Carrier Management). In FY2025, employers with fewer than 20 employees received the most HazCom citations, and fabricated metal product manufacturing was the second most cited sector (J.J. Keller). A serious violation can carry a penalty of up to $16,550 (OSHA penalties). Missing labels and outdated training records can be cited as separate items.
The bigger reason is simpler. When your people don't know what's in the container, they can't protect themselves, and a good program prevents injuries, lost time and turnover. In my years running safety inside manufacturing plants, the shops with clean labels and current SDSs were nearly always the ones where the rest of the program worked too.
EHS Simplified provides fractional EHS leadership for manufacturers with fewer than 100 employees. A Certified Safety Professional runs your safety program so your team can run the plant.
Frequently asked questions Do I have to retrain all my employees by November 20?
No. You only need additional training for newly identified hazards, and only for the employees exposed to those chemicals. Document who you trained and when.
My supplier hasn't sent an updated SDS. What do I do?
Ask in writing and keep a dated record of the request. Until you get the new sheet, keep the current one available to employees.
Does this apply to a small shop with fewer than 50 people?
Yes. The Hazard Communication Standard applies to employers whose workers may be exposed to hazardous chemicals, whatever the company's size. Small employers are cited for it more than anyone.
What's next after November 20?
Mixtures. The employer deadline to update labels, the program and training for mixtures is May 19, 2028.
Need a hand before November 20?
If you'd like someone to review your SDSs, labels and written program with you before the deadline, book a 30-minute call with me. If you'd rather look around first, try the EHS Simplified app free.
Internal links to add before publishing "fractional EHS leadership" → https://www.ehssimplified.com/plans "my years running safety inside manufacturing plants" → https://www.ehssimplified.com/about "manufacturers with fewer than 100 employees" → https://www.ehssimplified.com/industries Any existing HazCom or written-program post (I couldn't crawl the blog index to check) Once the Episode 1 video is on YouTube, embed it just above the FAQ