Every hazardous chemical must have an SDS. This obligation applies regardless of quantity. OSHA requires the SDS to be in the revised GHS format with all 16 sections. Manufacturers and importers must provide an SDS with every shipment. Employers who receive chemicals without an SDS must request one before the chemical is used.

OSHA aligned with the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) in 2012. The old 8-section Material Safety Data Sheet (MSDS) format is no longer compliant. All SDS must follow the standardised 16-section format. The required 16 sections cover identification, hazard identification, composition, first aid, fire-fighting, accidental release, handling and storage, exposure controls, physical properties, stability, toxicology, ecological information, disposal, transport, regulatory, and other information.

Immediate accessibility is a hard OSHA requirement. Workers must be able to access their SDS at any time, including in an emergency. Electronic SDS management systems are acceptable, but only if workers have unimpeded computer access at all times and a backup system exists for power outages or system failures. Locking SDS in an office or requiring supervisor keys is a direct violation.

The chemical inventory is the backbone of the HazCom programme. Without it, you cannot know whether SDS coverage is complete, training is comprehensive, or labelling is accurate. The inventory must include all hazardous chemicals by common name and cross-reference each to its SDS. It must be kept current as chemicals are added or removed.

A stale SDS library is a common compliance gap. Chemical formulations change. OSHA classification requirements evolve. Manufacturers periodically issue revised SDS with updated hazard information. Employers must obtain the current version and update their library. Outdated SDS with superseded hazard data can lead to inappropriate controls and worker injury.

All six elements are mandatory on every primary container label. Missing even one makes the label non-compliant. Signal words are either “Danger” (more severe) or “Warning” (less severe), not both. Hazard statements describe the nature of the hazard (e.g. “Causes serious eye damage”). Precautionary statements describe protective measures (e.g. “Wear protective gloves”). GHS pictograms use standardised symbols inside a red diamond border.

Secondary containers transferred from original containers must be labelled. The only exception is a portable container intended for immediate use by the person who made the transfer during that same shift. A spray bottle of bleach solution refilled each morning and used all day is not “immediate use.” It requires a label. This is one of the most common labelling violations found during OSHA inspections.

A label that cannot be read provides no protection. Labels must be in English as a minimum. In workplaces where workers primarily speak another language, labels may also be provided in that language, but English must always be present. Labels that are faded, water-damaged, covered by stickers, or facing away from view are treated as absent during an inspection.

Fixed piping systems are explicitly addressed in 1910.1200. Pipes do not need a label on every section, but they must be identified at sufficient intervals so a worker can always determine what the pipe contains without tracing it to source. Common approaches include periodic pipe labels, ANSI A13.1 colour-coded banding, or posted flow diagrams. Unmarked piping in facilities handling hazardous chemicals is a citation risk.

Employers who produce, formulate, or repackage hazardous chemicals take on the responsibilities of a chemical manufacturer under 1910.1200. This means creating SDS and labels for those substances, not just relying on the SDS provided by raw material suppliers. Many fabricators, mixers, and processors overlook this obligation.

The written programme is required by OSHA and must be specific to your workplace, not a generic template. It must describe how you implement each element of HazCom: how containers will be labelled, how SDS will be obtained and maintained, how training will be provided, and how contractors will be informed. A downloaded template that has not been customised to reflect your actual chemical inventory and procedures does not satisfy this requirement.

The written programme is a worker-facing document. It must be available without barriers. Workers have a right to review it. OSHA inspectors will request it within the first minutes of an inspection. If it cannot be produced promptly, it will be assumed non-existent or inadequate. Storing it only in a manager’s email or a locked filing cabinet does not satisfy the availability requirement.

Multi-employer worksites require host employers to share hazard information with visiting contractors before work begins. This includes the chemicals the contractor may encounter, their locations, emergency procedures, and any site-specific protective measures. A contractor who is not informed of a hazard cannot protect their workers from it. Failure to inform is a violation for the host employer, not just the contractor.

Non-routine tasks often expose workers to chemical hazards not encountered during their normal duties. A maintenance worker opening a vessel that normally contains a hazardous substance may encounter concentrated vapours, residues, or reactive by-products. The written programme must specifically address how workers will be informed of these hazards before performing non-routine tasks.

A written programme that does not reflect current operations is treated as inadequate by OSHA inspectors. If your chemical inventory has changed, your procedures have changed, or new job roles have been created since the programme was last reviewed, the programme is likely out of date. Annual review is the minimum expectation. The review should result in documented updates or confirmation that no changes are needed.

Training must occur before first exposure, not during or after. The training must be specific enough to be meaningful. Generic online courses that do not reference the specific chemicals in your workplace, the actual location of your SDS, or your specific labelling system may be insufficient. OSHA inspectors ask workers questions during inspections to assess whether training was effective, not just whether it occurred.

OSHA specifies the content that must be covered. Training limited to “chemicals can be dangerous, read the label” does not satisfy 1910.1200(h). Specific chemicals, their hazards, where their SDS are stored, what the GHS pictograms mean, and how to detect a release (odour, colour change, irritation, instrument alarm) must all be addressed for the chemicals in each worker’s specific work area.

OSHA does not specify a retention period for HazCom training records, but records must exist to demonstrate that training occurred. In practice, records should be retained for at least three years. Retraining is required whenever a new chemical hazard is introduced that workers have not previously been trained on. A new solvent, a new cleaning product, or a change in formulation can trigger this obligation.

A worker who cannot understand the training has not been trained. OSHA’s language requirement applies throughout 1910.1200. SDS must be in English but labels may be supplemented in other languages. Training must be comprehensible to the worker receiving it. This is one of the most commonly cited failures in industries with multilingual workforces, including agriculture, food processing, construction, and warehousing.

Emergency response information must be part of HazCom training. Workers must know what to do in the first moments of a chemical spill or exposure, not just where the SDS is. This includes the location of eyewash and emergency shower stations, the spill kit location, who to call, and whether the facility’s emergency response plan requires evacuation or shelter-in-place for specific chemicals.

HazCom is a multi-element programme that requires active management. Without a designated owner, SDS go stale, labels fade and are not replaced, training falls behind for new hires, and the written programme becomes obsolete. OSHA inspectors look for evidence of programme ownership during inspections. A programme with no identifiable coordinator is often a programme with significant underlying deficiencies.

A HazCom programme that is never evaluated for effectiveness is a compliance risk waiting to become an injury. Worker comprehension checks (asking workers to locate SDS, explain a label, or describe what to do if exposed) quickly reveal gaps that records-based reviews miss. Chemical exposure incidents are a lagging indicator that the programme failed. Near-miss reports are an earlier warning. Both must feed back into programme improvement.