Chapter 2 – Laws Impacting Payroll
Payroll does not operate in a legal vacuum. Two distinct sources of law shape how a Canadian payroll department has to behave: legislation, the written statutes and regulations passed by federal, provincial, and territorial governments, and common law, the body of rules built up through judges’ decisions over time. Understanding both is essential for a payroll professional, because legislation sets the deduction, remittance, and employment-standard obligations an employer must follow, while common law fills gaps legislation leaves open, most importantly the question of whether a given worker is legally an employee at all.
Two Sources of Payroll Law: Legislation and Common Law
Legislation is written law enacted by an elected government, whether federal Parliament or a provincial or territorial legislature, within that government’s specific area of jurisdiction. In Canada, federal legislation does not override provincial legislation; each level of government legislates within its own constitutional lane, and payroll obligations end up drawing on both levels depending on the rule in question.
Common law, by contrast, is judge-made law built through court decisions rather than a legislature. Courts operate hierarchically, so a ruling from a higher court binds courts below it; a Supreme Court of Canada decision, for instance, affects how every lower Canadian court must interpret that issue going forward. Common law becomes especially important where legislation is silent or ambiguous, and courts have to fill the gap by applying general legal principles to the specific facts in front of them.
Employee vs. Independent Contractor: The Wiebe Door Factors
Whether a worker is an employee or an independent contractor matters enormously for payroll, because most legislation requiring source deductions and most employment standards apply only to employees. An independent contractor is generally self-employed, supplies their own tools, manages their own workflow, and is paid by invoice rather than payroll, while an employee works under the direction and schedule the employer sets.
The legal test for telling the two apart comes from case law rather than a statute: the Wiebe Door factors, drawn from Wiebe Door Services Ltd. v. M.N.R. and later affirmed by the Supreme Court of Canada. The central question is whether the worker is genuinely in business on their own account, and the court weighs several factors together, including how much control the employer exercises over the work, whether the worker supplies their own equipment, whether the worker can hire helpers of their own, how much financial risk the worker bears, and how much opportunity the worker has for profit or loss. A rideshare driver who sets their own hours, uses their own car, and bears the financial risk of the work looks like an independent contractor, while a transit driver following a fixed schedule on a vehicle the employer owns looks like an employee, even though both are simply driving for a living.
When the Classification Is Unclear
Not every working relationship falls neatly on one side of the line, and getting the classification wrong carries real consequences: an employer that treats a worker as an independent contractor when the CRA later determines they were actually an employee can be required to pay both the employer’s and the employee’s share of source deductions that should have been withheld, on top of penalties.
Since a 2013 Federal Court of Appeal decision, courts apply a two-part test in ambiguous cases: first asking whether the employer and worker shared a genuine, mutual intention about the nature of their relationship, and second checking whether that stated intention actually matches the Wiebe Door factors in practice. A written contract calling someone an independent contractor does not settle the question if the employer in fact controls the work and supplies the tools; the substance of the relationship controls over the label the parties chose. Where an employer genuinely cannot tell how a worker should be classified, they can request a formal ruling from the CRA rather than guessing and risking penalties later.
Federal Legislation Requiring Source Deductions
Three federal statutes require Canadian employers to make source deductions from every employee’s gross pay: the Income Tax Act, the Employment Insurance Act, and the Canada Pension Plan. The Income Tax Act requires withholding both federal and provincial income tax (Quebec’s provincial tax is administered separately through Revenue Québec, unlike every other province). The Employment Insurance Act requires withholding the employee’s EI premium and also requires the employer to contribute its own premium, currently set at 1.4 times the employee rate. The Canada Pension Plan similarly requires withholding an employee CPP contribution that the employer must match.
Before any of this is possible, an employer must register a payroll account with the CRA, either as a standalone registration or added to an existing business number. Non-compliance carries real teeth: routine late remittances draw interest, an employer who fails to remit the required amounts can be on the hook for both the employer’s and employee’s share of CPP contributions plus a penalty that can reach the higher end of a percentage range, and a serious or repeated failure to deduct, remit, and report can lead to prosecution, fines, or even imprisonment in the most serious cases.
Employment Standards: What They Cover and Who They Bind
Employment standards legislation sets the legal minimum an employer must provide in areas like minimum wage, breaks and rest days, overtime pay, statutory holiday pay, termination notice, and how frequently employees must be paid. An employer is always free to offer more than the legislated minimum, whether through individual contracts or a collective agreement, but never less.
Almost every jurisdiction in Canada, each of the ten provinces and three territories plus the federal government, maintains its own employment standards legislation, and most employers follow the standards of the province or territory where they operate. A small set of federally regulated industries, such as banking, air transportation, broadcasting, and interprovincial road or rail transportation, follow federal employment standards instead. When an employer operates in several provinces, payroll generally has to track and apply each province’s own standards to the employees working there, rather than picking one standard to apply everywhere.
Minimum Wage and Other Standards Vary Sharply by Jurisdiction
Minimum wage is the clearest example of how much these standards vary: each province, territory, and the federal government sets its own rate, some updated automatically each year (often tied to a measure like the Consumer Price Index) and others left unchanged until the government chooses to legislate an increase. A payroll department has to track whichever jurisdiction’s rate actually governs each employee and apply the new rate exactly on its legislated effective date, not before and not late.
The same jurisdiction-by-jurisdiction variation runs through nearly every other employment standard: vacation pay entitlement, how statutory holiday pay is calculated, the overtime threshold (a different number of hours per week in different provinces), how averaging agreements can be used to smooth out overtime obligations, how long a temporary layoff can run before it legally becomes a termination, what can and cannot be deducted from an employee’s pay, and which job-protected leaves are available and for how long. A payroll professional working across multiple provinces effectively has to keep a separate mental (or literal) checklist per jurisdiction rather than assuming one province’s rules apply everywhere.
Other Provincial Legislation Affecting Payroll
Employment standards are not the only provincial rules that touch payroll. Every province and territory has workers’ compensation legislation that funds a no-fault workplace-injury compensation scheme through employer-paid premiums; employers must register with their provincial board, pay premiums, and report information annually. Some provinces, including British Columbia, Ontario, and (in a related form) Manitoba, also levy an employer health tax based on total payroll size, usually with an exemption for smaller employers below a set payroll threshold.
Legislation in this space also keeps evolving to catch up with new kinds of work: Ontario’s Digital Platform Workers’ Rights Act, for example, extends certain protections, a minimum wage guarantee, a recurring pay period, and the right to keep tips without deduction, to gig-economy workers on platforms like rideshare and delivery apps, regardless of whether those workers are classified as employees.
What COVID-19 Revealed About Payroll’s Vulnerabilities
The COVID-19 pandemic period stress-tested Canadian payroll systems in ways that are worth remembering even now that the acute crisis has passed. Employment standards, temporary layoff rules, and new job-protected leaves changed on unusually short notice at both the federal and provincial level, and legislation amending the Income Tax Act created an emergency wage subsidy program that, although ultimately administered by the CRA rather than through payroll deduction mechanics directly, still placed real record-keeping obligations on payroll departments to document pre-pandemic wages and prove ongoing payment to employees.
Beyond the legislative churn, payroll teams also faced a sheer volume problem, processing an unusually high number of layoffs, leaves, and Records of Employment in a short period. The clearest lesson for the profession is structural rather than pandemic-specific: an organization with an established process for regularly reviewing government and CRA announcements, and payroll software capable of absorbing a sudden spike in volume, is far better positioned to handle the next disruption, whatever form it takes, than one relying on ad hoc monitoring.
Quick revision summary
- Payroll law comes from two sources: legislation (federal and provincial statutes) and common law (judge-made rules that fill gaps in legislation).
- The Wiebe Door factors (control, ownership of tools, financial risk, opportunity for profit) determine whether a worker is an employee or independent contractor.
- The Income Tax Act, Employment Insurance Act, and Canada Pension Plan are the three federal statutes requiring source deductions from every employee’s pay.
- Employment standards set legal minimums (wage, overtime, vacation, leaves, termination notice) that vary by province/territory; employers can exceed but never go below them.
- Most employers follow the employment standards of the province where they operate; only specific federally regulated industries follow federal standards instead.
- Workers’ compensation premiums, and in some provinces an employer health tax, are additional provincial payroll obligations beyond employment standards.