Ontario launches Canada's first Occupational Exposure Registry, allowing workers to anonymously log 11 hazardous substances

Ontario has launched the first Occupational Exposure Registry (OER) in Canada, a secure digital portal designed to help workers protect their long term health by recording exposure to hazardous substances at work. Released on February 20, 2026, the registry includes an easy self-tracker that allows workers to submit exposure information anonymously in a few minutes. After each entry, the worker receives a confirmation email and can download the record, creating a personal history that can be referenced across jobs and over an entire career.

The policy goal is straightforward: occupational illnesses are often underreported and can be difficult to diagnose because symptoms may appear years after exposure. By giving workers a practical way to document exposures as they happen, the registry aims to support prevention today and strengthen medical assessments later if health issues arise.

How the Occupational Exposure Registry works in practice

The OER is meant to be simple enough to use regularly, not only after a major incident. Starting February 20, 2026, workers can submit information for one of 11 designated hazardous substances, including asbestos, lead, mercury, and silica. Each entry focuses on the essentials: how exposure occurred and what protections were in place at the time, such as ventilation, training, or personal protective equipment.

What the portal gives workers:

• Anonymous, secure submissions that take only a few minutes
• A confirmation email after each submission
• A downloadable record that can be saved for personal files
• A consistent way to track exposure across multiple employers and job sites

From a consultation perspective, the value is in portability. Workers in construction, mining, emergency services, and many skilled trades often move between sites and employers. A worker controlled exposure record reduces reliance on memory and helps keep details organized when they matter most.

Why the registry matters for occupational illness, WSIB access, and long term health

The launch highlights a wider effort to strengthen workplace health and safety and improve occupational disease tracking. Several figures in the announcement show why the province is focusing on this issue.

Key numbers that frame the risk:

• Between 2010 and 2019, occupational illnesses accounted for approximately 76 per cent of workplace fatalities in Ontario
• WSIB reported 20,886 allowed occupational disease claims in 2025
• In 2025, there were close to 580,000 construction workers in Ontario

Health advocates also pointed to the broader national impact: approximately 10,000 cancer cases each year in Canada are caused by exposure to cancer-causing substances in the workplace, many of which are preventable if exposures are reduced.

In plain terms, the registry aims to do two things at once. First, it increases awareness so workers can identify hazards and push for stronger controls earlier. Second, it creates a clean exposure history that can support future medical conversations and, where relevant, strengthen documentation when workers seek WSIB related services and supports for occupational disease claims.

What workers should do now and how to use it effectively

The registry is optional, but it works best when workers treat it like a routine record, especially after tasks where exposure is possible. The most helpful entries are not necessarily long, they are consistent and specific enough to make sense years later.

Before submitting, it helps to note:

• Approximate date or time period of the exposure
• The substance involved among the 11 designated hazardous substances
• How the exposure happened
• What protections were in place, such as ventilation, training, or PPE

The OER also arrives alongside other workplace safety actions Ontario highlighted under seven Working for Workers legislative packages. Examples include requiring properly fitting PPE for women and workers with diverse body types, mandating AEDs on construction projects with 20 or more workers expected to last three months or longer, and requiring naloxone in workplaces where there is a risk of opioid overdose.

On the employer side, the Supporting Ontario’s Safe Employers program now recognizes 101 employers that go beyond compliance, and these recognized employers have earned more than $4.5 million in WSIB incentives to date. The province also noted that, in Working for Workers Six, WSIB was directed to invest $400 million in health and safety programs focused on mental health, preventative and chronic injury care, and recovery supports.

A professional observation from an immigration consultant is that documentation habits often become critical during job transitions. Workers who change employers frequently, including many newcomers and project based workers, can face gaps in records when trying to explain job conditions, exposures, or safety measures. A consistent exposure record can reduce uncertainty later and support clearer communication with employers and healthcare providers.

Current difficulties often arise when workers must reconstruct exposure details years later while also managing job changes, missing paperwork, or shifting work authorization. Support from an immigration consultant can help when health related employment decisions overlap with status timelines, through careful preparation, advising, and representation for immigration applications.

Ontario’s Occupational Exposure Registry is a practical prevention tool that puts long term exposure tracking directly in workers’ hands. By making it easy to log exposures to 11 hazardous substances and save downloadable records, the province is aiming to improve awareness now and strengthen health support and occupational disease documentation later.