QUICK ANSWER
Working two jobs at the same time — including two full-time jobs — is completely legal in Ontario and across Canada. No law prevents it. What may restrict you is your employment contract, a conflict of interest, or a breach of your duty of loyalty to your employer.
Is it legal to work two jobs — or even two full-time jobs — in Ontario and Canada?
Yes — and to be completely clear, it is not illegal either. Working two jobs at the same time, having two full-time jobs, or working for two different employers simultaneously is fully permitted under Canadian and Ontario law. No provincial or federal legislation restricts how many employers you can work for at once. This applies equally whether you are in Ontario, British Columbia, Alberta, or any other province — dual employment is a personal choice the law leaves entirely to you.
What the law does regulate is how many hours a single employer can require you to work, and your entitlements to overtime and rest periods. But choosing to take on a second job outside your regular hours is entirely within your rights.
Do you have to tell your employer about a second job — and can they stop you from working somewhere else?
There is no law in Ontario or Canada that automatically requires you to disclose a second job to your employer. Whether you must tell them — and whether they can stop you — depends entirely on what your employment contract says. Some contracts contain an exclusivity clause that requires disclosure or restricts outside work entirely. If yours does, you are bound by it. If it says nothing, you are generally free to work elsewhere without informing your primary employer.
That said, an employer can only go so far. A clause that prevents you from doing any outside work whatsoever — regardless of whether it affects your job performance or harms the business — may be found to be overly broad and unenforceable by Ontario courts. What happens on your own time, with your own resources, and for a non-competing employer is generally considered your own business.
Practical step: Before starting a second job, read your current contract carefully — especially any section about exclusivity, outside employment, or conflicts of interest. If you are unsure what your obligations are, speak with an employment lawyer before you start the second role, not after.
Is it a conflict of interest to work two jobs in the same field?
Working in the same industry for two employers is not automatically a conflict of interest — but it can easily become one. A conflict arises when your second job directly competes with your primary employer, when it requires you to use confidential information, client lists, or trade secrets from your main job, or when it involves poaching clients or colleagues. Even without a written clause in your contract, Ontario employees owe their employer a common law duty of loyalty — meaning you cannot use your employer’s time, resources, or inside knowledge to benefit a competing employer.
Example: A marketing manager at a technology company takes a freelance contract doing strategy work for a direct competitor — using knowledge of their primary employer’s clients and campaigns. This is almost certainly a conflict of interest and could justify termination for cause, even if no exclusivity clause was ever signed.
Can you actually do two full-time jobs at the same time?
Legally, yes. Practically, it depends on the nature of both roles. The rise of remote work has made this more common — particularly in technology, writing, finance, and consulting — where some people manage two full-time salaries by carefully organising their schedules. The legal risk is not in holding two jobs, but in letting one suffer because of the other. If your performance at your primary job deteriorates as a direct result of your second role, your employer may have grounds for discipline or termination — regardless of what you do outside your contracted hours.
There are also tax implications worth knowing about. When two employers each deduct income tax based only on their own payroll, they often do not withhold enough to cover your combined income. You may owe additional tax at the end of the year. Speaking with an accountant before you start a second job can prevent an unwelcome surprise come tax time.
The short version — what you need to remember
Working two jobs — including two full-time jobs — is legal in Ontario and across Canada
● You do not have to tell your employer unless your contract requires it
● Your employer may be able to restrict outside work — but only within the limits of what is reasonable and what your contract actually says
● Working in the same field for two employers is not automatically a conflict of interest — but it can be, depending on what you do and what information you use
● Your duty of loyalty to your primary employer applies even without a written clause — do not use their time, clients, or confidential information to benefit a second employer
● Plan for the tax impact — two employers rarely withhold enough combined, so you may owe more at year end
The bottom line: The law will not stop you from working two jobs in Ontario or Canada. What might stop you is your contract, a genuine conflict of interest, or a performance problem caused by trying to do too much. Read your contract, keep your obligations separate, and if you are in any doubt about whether your situation is legally safe — speak with an Ontario employment lawyer before you start.
