Post-Incident Testing

After a workplace incident, timely testing may form part of a broader response. Total Group provides post-incident drug, alcohol and other occupational health screening to support an employer’s investigation and next-step planning. The service is intended to add documented information to the incident record, not to replace medical care, scene preservation, witness accounts or the employer’s investigation process.

Testing that fits the incident response

Each request starts with the facts available at the time: what happened, who may have been exposed or involved, what immediate care was required, and what the organization’s policy says about post-incident testing. The testing plan can then be matched to the worksite, the people involved and the information the investigation needs.

Depending on the approved scope, Total Group’s support may include drug and alcohol screening and other occupational health screening identified by the client. The exact collection method, analytes, timing, interpretation and reporting format must be confirmed before testing. A result should be considered alongside observations, task conditions, medical information that is properly authorized for use, equipment or process evidence, and the worker’s account.

Immediate priorities after an incident

Testing should not delay emergency response or make an unsafe situation worse. The employer or site lead should first arrange medical attention where needed, control ongoing hazards, preserve relevant evidence and follow the site’s incident-notification procedure. For an Alberta work site, serious injuries or incidents defined in section 33 of the Occupational Health and Safety Act must be reported by the prime contractor or, if there is no prime contractor, the employer to an OHS Director as soon as possible. Alberta’s OHS incident-investigation guidance describes that provincial process and its limits.

If impairment is suspected, the immediate question is whether the person can perform the assigned work safely. CCOHS guidance recommends responding to the safety risk, documenting the concern and actions taken, arranging emergency help when necessary, and preventing a person suspected of impairment from driving. The employer or supervisor should not diagnose a medical condition or assume that substance use caused the incident.

Roles, consent and confidentiality

The employer or designated incident lead remains responsible for the site response, policy decision and investigation record. Supervisors provide factual observations and protect the worker and others from immediate risk. Workers should receive clear information about the process and be treated fairly. Where a union, client, health professional, privacy officer or legal adviser has a defined role, that role should be confirmed before information is collected or shared.

Testing decisions are jurisdiction- and policy-dependent. Alberta’s current workplace impairment guidance says that legislation does not address testing for impairment and advises employers to obtain legal advice on human rights, labour and employment law, privacy and OHS before implementing a testing program. Read the Alberta guidance. Other provinces, federal undertakings, collective agreements, client rules and workplace policies may change the requirements.

Test results and related health information require controlled access. The Office of the Privacy Commissioner of Canada treated an employee’s drug-test result as personal information and found that disclosure for a different purpose without consent or a valid exception was inappropriate in the case reviewed. The applicable privacy regime, consent language, retention period and permitted recipients should be confirmed for the worksite before results are released.

Investigation records that remain useful

A clear record helps the employer separate what was observed from what was tested and what remains unknown. Record the incident time and location, immediate controls, people notified, testing authorization, collection details, chain-of-custody information where applicable, the report recipient, and any restrictions on further disclosure. Keep conclusions within the evidence. A screening result does not by itself establish when a substance was used, whether a worker was impaired at the time, or what caused an incident.

CCOHS policy guidance recommends that workplace programs state when testing may occur, how it will be conducted, which substances are included, how results will be interpreted, and how privacy, accommodation and support will be handled. Those decisions belong in the applicable employer or client program and should receive qualified review where required.

Plan the service around your requirements

When you contact Total Group, share the worksite jurisdiction, employment jurisdiction, incident type, number of people involved, immediate medical or emergency actions, applicable testing or impairment policy, required reporting route and any client or collective-agreement conditions. We can then discuss the appropriate post-incident testing scope and the investigation-support information your team needs. Testing arrangements, availability, collection method and reporting details are confirmed for each request rather than assumed.