Drug and alcohol testing: what actually applies to fishing crew
There's no site-access-gate testing program in commercial fishing like there is in oil sands or mining -- here's what genuinely does apply, sourced, and why crew share status changes the picture. Not a guide to timing or beating anything.
Key facts
- Universal pre-access testing regime
- None found -- no DFO or industry-wide policy
- Most crew's employment status
- Self-employed sharespeople, not employees
- Cannabis/impairing substance rule
- Not permitted within 48 hours of shipboard duty
- Source: Transport Canada, checked 2026-09-08
- Random testing legal limit
- Employer must show a demonstrated workplace problem
- Source: Irving Pulp & Paper, 2013 SCC 34
This page covers what the law actually says and what to expect -- it does not, and will not, cover detection windows, how to pass a test, or anything that reads as timing guidance. If you're looking for that, this isn't the page, and we won't link anywhere that provides it. Checked against sources below on 2026-09-08.
Is there a standard pre-access drug test in commercial fishing?
No single national one, and that's worth saying plainly rather than padding this page out with a framework borrowed from a different industry. Unlike an oil sands or mine site-access gate, which runs pre-access testing as a condition of entering the site, no DFO policy or industry-wide association standard requiring pre-access drug and alcohol testing for commercial fishing crew turned up in this research. Individual boat owners or processing companies may run their own policy -- if you're told you need to test, ask to see the actual written policy rather than assuming an industry-wide rule exists.
Why crew share status changes this more than in other industries
Here's the fact most guides skip, and it's the same one that reshapes the tax picture on our crew share and tax page: most fishing crew paid a share of the catch are self-employed for CRA purposes, not employees. The entire legal apparatus around workplace drug testing in Canada -- an employer's duty to accommodate, the Supreme Court's limits on random testing -- is built around an employer-employee relationship. If you're genuinely a self-employed sharesperson, there generally isn't an employer testing you at all. That changes if you're instead paid a flat wage with no link to the catch -- see the FAQ below for how that shifts things.
What actually applies, regardless of employment status
Two real rules apply to anyone on a boat, employee or self-employed owner-operator alike, because they're statutory rather than an employer's testing policy:
Criminal law. Under s.320.14(1)(a) of the Criminal Code , "Everyone commits an offence who operates a conveyance while the person's ability to operate it is impaired to any degree by alcohol or a drug." Section 320.11 defines "conveyance" to explicitly include "a vessel", alongside a motor vehicle, aircraft, or railway equipment. This applies whether you're a hired hand or the owner-operator running your own boat.
Transport Canada's marine medical certificate rules. If your ticket requires a Marine Medical Certificate -- see our tickets page for which fishing certificates do, including the Fishing Master certificates -- Transport Canada's own guidance sets two rules: cannabis and other potentially performance-impairing substances or drugs, prescribed or not, are "not permitted within 48 hours prior to the performance of ship-board duties," and you "must be honest and open about [your] current and past use of alcohol, cannabis and any other legal or illegal drugs/substances" during the medical exam itself. That's a compliance duty on you ahead of duty and an honesty requirement at the exam -- this page stops there and says nothing further about it.
Where an employer relationship does exist
For crew who are genuinely employees -- a flat wage with no catch link, or shore-side work for a processing company -- the general national legal principles apply. Addiction to drugs or alcohol is recognized as a disability under Canadian human rights law; the Canadian Human Rights Commission's own guide for employers, Impaired at Work, describes a duty to consider accommodating an employee with a substance dependence rather than automatic termination. And blanket random testing has real legal limits: in Communications, Energy and Paperworkers Union, Local 30 v Irving Pulp & Paper, Ltd., 2013 SCC 34 (decided June 25, 2013), the Supreme Court of Canada struck down a unionized employer's random alcohol-testing policy because the employer couldn't show a demonstrated, generalized substance-use problem in that specific workplace -- a dangerous workplace alone wasn't enough. Marine shipping and navigation is constitutionally a federally regulated industry, which is why this page cites the federal Canadian Human Rights Commission rather than a single province's human rights body -- but whether a specific fishing employer counts as federally or provincially regulated for employment purposes is its own question, and this page isn't going to guess it for your specific boat or company.
Sources
- Criminal Code -- s.320.14, operation while impaired — accessed 2026-09-08.
- Criminal Code -- s.320.11, definition of "conveyance" — accessed 2026-09-08.
- Transport Canada -- How to obtain a Canadian marine medical certificate — accessed 2026-09-08. Source for the 48-hour cannabis/impairing-substance rule and the honest-disclosure requirement.
- Government of Canada -- Canada Labour Code parts overview — accessed 2026-09-08. Source for maritime navigation and shipping being constitutionally a federal industry.
- Canadian Human Rights Commission -- Impaired at Work: a guide to accommodating substance dependence — accessed 2026-09-08.
- Communications, Energy and Paperworkers Union, Local 30 v Irving Pulp & Paper, Ltd., 2013 SCC 34 (decided June 25, 2013) — summarized via Mondaq's case summary (accessed 2026-09-08); primary decision text via CanLII, 2013 SCC 34.
- CRA -- Farming and fishing income — accessed 2026-09-08. Source for sharespeople being self-employed (see /camp-tax/ for full detail).
- Atlantic Lottery -- Nova Scotia Mental Health and Addictions Crisis Line — checked 2026-09-06.
- Wellness Together Canada — national mental health and substance use resource, accessed 2026-09-08.
Frequently asked questions
Does a boat owner drug test crew before a trip?
There's no single national answer, and no universal pre-access testing regime for commercial fishing the way there is at an oil sands or mine site-access gate -- no DFO or industry-association pre-access testing policy exists to point to. Whether a specific skipper or company tests is up to that specific employer or vessel; if you're being asked to test, ask to see the actual written policy rather than assuming a general industry rule.
I'm paid a crew share, not a wage -- does workplace drug testing law even apply to me?
This is the part most guides skip, and it's genuinely different from a salaried camp job. Per CRA's own guidance (see our crew share and tax page), most fishing crew paid a share of the catch are self-employed, not employees. The legal framework around an employer testing and accommodating an employee -- human rights law, the Supreme Court's limits on random testing -- is built around an employer-employee relationship. If you're genuinely self-employed, there generally isn't an employer testing you in the first place. If you're instead paid a flat wage with no link to the catch, you may be a genuine employee, and the employee-side rules below are more likely to apply to you.
Is there a law against being impaired while running a boat?
Yes, and this applies no matter who employs you or whether you employ yourself. Under s.320.14(1)(a) of the Criminal Code, "Everyone commits an offence who operates a conveyance while the person's ability to operate it is impaired to any degree by alcohol or a drug" -- and s.320.11 defines "conveyance" to specifically include "a vessel", alongside a motor vehicle, aircraft, or railway equipment. This is a criminal law, not a workplace testing policy, and it applies to an owner-operator running their own boat exactly as it applies to a hired skipper.
Do I need to disclose drug or alcohol use to get a marine medical certificate?
If your ticket requires one -- see our tickets page for which fishing certificates do -- yes. Transport Canada's own guidance for obtaining a Canadian marine medical certificate says plainly: "You must be honest and open about your current and past use of alcohol, cannabis and any other legal or illegal drugs/substances during your medical examination." The same page also sets a compliance rule, not a testing program: cannabis and other potentially performance-impairing substances or drugs, prescribed or not, are "not permitted within 48 hours prior to the performance of ship-board duties." That's a duty on you before you show up for duty, not a test you're being timed against -- this page isn't going to say anything more about it than that.
What if I actually have a substance dependence and I'm worried about my job?
This page can't tell you what happens with any specific employer, and it isn't going to guess. What's true nationally: addiction to drugs or alcohol is recognized as a disability under Canadian human rights law, and the Canadian Human Rights Commission's own guidance for employers describes a duty to consider accommodation for an employee with a substance dependence, not automatic termination -- though that duty runs between an employer and an employee, so it may not apply the same way if you're genuinely self-employed. If you have a dependence concern, the more useful first call is a health line, not a workplace-rights one -- see the callout below for provincial and national options -- or your union rep if you have one, or an employment lawyer for anything job-specific.
Can an employer just randomly test every crew member?
Where a genuine employer-employee relationship exists, Canadian courts have specifically limited this. In Communications, Energy and Paperworkers Union, Local 30 v Irving Pulp & Paper, Ltd., 2013 SCC 34 (decided June 25, 2013), the Supreme Court of Canada struck down a unionized employer's random alcohol-testing policy for safety-sensitive workers because the employer couldn't show a demonstrated, generalized substance-use problem at that specific workplace -- a dangerous workplace alone wasn't enough. That's a national decision, not specific to fishing or to one province, and it's the same limiting principle courts have applied since to random testing generally.
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