Constitutional Law — Ontario Employment Law

19 casesDecisions from 1944–2017

About Constitutional Law

When navigating employment law in Ontario, constitutional law functions as the underlying blueprint that determines which rules apply to your workplace and limits what the government can dictate. While most daily workplace issues are handled through specific statutes or the common law, constitutional principles shape the very foundation of those rights in two massive ways: the division of powers and the protection of fundamental freedoms.

First, constitutional law dictates legislative jurisdiction under the Constitution Act, 1867. This framework divides authority between the provincial and federal governments. The vast majority of Ontario workplaces fall under provincial jurisdiction and are governed by laws like the Employment Standards Act, 2000 (ESA) and the Labour Relations Act. However, constitutional law designates certain essential, interprovincial industries—such as banking, telecommunications, aeronautics, and interprovincial transport—as federal undertakings. Workers in these sectors are instead governed by the Canada Labour Code. Understanding this constitutional division is the mandatory first step in any employment dispute, as applying to the wrong governing body can result in dismissed claims.

Second, the Canadian Charter of Rights and Freedoms places strict limits on government action. A common misconception is that a private boss acting unfairly is 'violating your constitutional rights.' In reality, the Charter does not generally apply to private employment relationships; those are typically regulated by the Ontario Human Rights Code. Instead, the Charter applies to government acts, legislation, and public sector employers.

In the employment sphere, constitutional clashes most frequently erupt in the public sector or during collective bargaining. When the provincial or federal government passes legislation that caps public sector wages, imposes back-to-work orders, or alters union certification pathways, unions often launch constitutional challenges. They frequently argue that such laws violate Section 2(d) of the Charter (freedom of association). Even if a court finds a violation, the government may attempt to save the law under Section 1 by proving the interference is a demonstrably justified limit in a free and democratic society, often citing severe economic or fiscal crises.

Because challenging the constitutionality of a law or deciphering intricate jurisdictional divides is rarely straightforward, relying on surface-level assumptions can be legally fatal. Establishing how the constitution impacts a specific legislative framework or union mandate requires dedicated insight from a legal professional operating within this highly specialized arena.

Frequently Asked Questions

Does the Charter of Rights and Freedoms protect me from a toxic private employer?

Generally, no. The Charter applies strictly to government entities, laws, and public sector actions. If an employer in the private sector discriminates against you or treats you unfairly, your protections stem from the Ontario Human Rights Code, the Employment Standards Act, or common law, rather than constitutional law.

How does constitutional law decide whether I am a provincial or federal employee?

Sections 91 and 92 of the Constitution Act, 1867 divide legislative powers based on the nature of the industry. Interprovincial and nationwide operations like airlines, banks, and broadcasting are constitutionally granted to the federal government (Canada Labour Code), while most other commercial and local industries default to provincial jurisdiction.

Can the Ontario government legally pass legislation to freeze public sector wages?

The government has the legislative authority to pass such laws, but they frequently face constitutional challenges. Labour unions often argue that arbitrarily rewriting collective agreements or capping wages without meaningful consultation violates the freedom of association under Section 2(d) of the Charter.

What happens if a workplace tribunal decides a provincial law is unconstitutional?

If an employment law or regulation severely conflicts with the Charter, a court (and sometimes a specialized tribunal) may declare that specific provision invalid, strike it down, or 'read it down' so that it no longer applies unconstitutionally. This can render the government's workplace policy legally unenforceable.

When should our labour organization contact a legal professional about a potential Charter challenge?

If the government introduces legislation that unilaterally alters your negotiated collective agreement, imposes heavy regulatory fees, or severely restricts your legal right to strike, you should have legal counsel review the statute immediately to explore a constitutional challenge before the new rules take deep root.

Are seniority rights protected under the Canadian constitution?

No. Courts have consistently ruled that seniority based on a date of hire is a concept born out of collective bargaining and statutory labour relations, not a deeply vested or fundamental constitutional right protected by the Charter.

Common Scenarios

  • A coalition of public sector unions files a massive Charter challenge against the provincial government after new legislation abruptly voids heavily negotiated wage increases in their current collective agreements.
  • A dispatcher at an interprovincial trucking company attempts to file a claim with the Ontario Ministry of Labour for unpaid overtime, only to have the claim rejected because a jurisdictional analysis reveals their workplace falls exclusively under federal constitutional authority.
  • A trade union challenges the validity of mandatory regulatory fees paid to a provincial oversight board, arguing in court that the regulations represent an unconstitutional indirect tax outside the province's legislative powers.

What You Should Know

  • Always confirm your employer's constitutional jurisdiction before pursuing administrative remedies; filing a provincial ESA claim when you actually fall under the federal Canada Labour Code will waste valuable time and risk missing limitation periods.
  • Do not frame a private workplace discrimination complaint as a 'constitutional rights' violation; use the proper legal terminology and direct your complaint through the Ontario Human Rights Tribunal.
  • If you work in a public sector environment where fundamental bargaining rights are being restricted by new legislation, meticulously document all historical negotiations, as courts rely heavily on the bargaining context to determine Section 2(d) Charter breaches.
  • Recognize that launching a constitutional challenge against government legislation is incredibly resource-intensive and time-consuming, requiring consultation with lawyers who specifically narrow in on appellate and public law rather than standard wrongful dismissal.

Featured Cases

Cherrier v. Attorney General of Canada

2017 ONSC 7336 (CanLII) · 2017-12-07

Cherrier v AG Canada: Seniority Rights & Charter

This is a constitutional challenge regarding whether seniority rights based on date of hire are protected under the Charter of Rights and Freedoms. The court held that seniority is a collective bargaining concept rather than a vested constitutional right, and thus no Charter violation was found.

seniority rights charter challenge collective bargaining constitutional law labour relations

Canadian Union of Postal Workers v Her Majesty in Right of Canada

2017 ONSC 292 (CanLII) · 2017-03-01

CUPW v Canada: Charter Remedies & Collective Agreement

This is a constitutional and procedural ruling concerning the enforceability of a collective agreement (the Extended Agreement) following the declaration of invalidity of the Restoring Mail Delivery for Canadians Act. The court addressed whether it retained jurisdiction under section 24(1) of the Charter to issue further remedial relief and whether the matter was functus officio.

labour relations charter remedies collective agreement constitutional law functus officio

OPSEU v Ontario

2016 ONSC 2197 (CanLII) · 2016-04-20

OPSEU v Ontario: Collective Bargaining & Charter Rights

This is a constitutional challenge brought by OPSEU against the Province of Ontario regarding the government's conduct during collective bargaining with the Ontario English Catholic Teachers' Association (OECTA). The central legal issues concern whether Ontario's unilateral imposition of parameters and the OECTA Memorandum of Understanding substantially interfered with meaningful collective bargaining in violation of section 2(d) of the Charter, and whether any such breaches were justified under section 1.

freedom of association collective bargaining charter of rights labour relations constitutional law

The Professional Institute of the Public Service of Canada v. Canada (Attorney General)

2014 ONSC 965 (CanLII) · 2014-02-12

Public Sector Union Challenges Wage Restraint Act

This is a constitutional challenge brought by a public sector union against the federal government regarding the Expenditure Restraint Act. The central legal issue is whether the Act's imposition of wage limits and rollback of previously agreed-upon increases substantially interferes with the freedom of association and the derivative right to collective bargaining under section 2(d) of the Charter. The court must determine if this infringement is justified under section 1 of the Charter, considering the context of an economic crisis and fiscal sustainability.

labour relations charter rights collective bargaining wage restraint constitutional law

Labourers' International Union of North America v. Ontario Construction Secretariat

1996 CanLII 11770 (ON SC) · 1996-11-21

Constitutionality of Construction Industry Regulatory Fees

This is a constitutional challenge regarding the validity of regulatory fees required under the Labour Relations Act and O. Reg. 187/93, which mandate payments to the Ontario Construction Secretariat. The court addressed whether these fees constituted indirect taxation or an infringement of freedom of association, and whether their collection involved impermissible subdelegation of legislative authority.

labour relations constitutional law regulatory fees freedom of association subdelegation

Schafer v. Canada (Attorney General)

1996 CanLII 8013 (ON SC) · 1996-05-31

A constitutional law case challenging the validity of unemployment insurance provisions under the Charter of Rights, focusing on equality rights and the application of the limitation clause.

charter challenge equality rights unemployment insurance constitutional law

Ontario Public Service Employees Union v. Ontario

1994 CanLII 10557 (ON SC) · 1994-03-31

Constitutional Jurisdiction: Labour Relations in Aeronautics

This is a constitutional law decision addressing whether provincial labour relations tribunals have jurisdiction over a provincially owned corporation engaged in aeronautics. The court determined that federal jurisdiction over aeronautics includes labour relations as an integral component, thereby precluding provincial legislation from regulating these labour relations.

labour relations constitutional law federal jurisdiction aeronautics provincial tribunal

Hutton v. Ontario (Attorney-General) (H.C.J.)

1987 CanLII 4367 (ON SC) · 1987-11-16

OPP Collective Bargaining Charter Challenge

This is a constitutional decision regarding the freedom of association and equality rights of Ontario Provincial Police officers concerning their right to collective bargaining. The court found that the complete prohibition on collective bargaining for senior OPP officers violated section 2(d) of the Charter and was not justified. Additionally, the distinction between OPP officers and municipal police officers regarding bargaining rights was found to violate section 15 of the Charter.

collective bargaining charter rights labour relations police officers constitutional law

Re Lavigne and Ontario Public Service Employees Union et al. (No. 2)

1987 CanLII 4184 (ON SC) · 1987-07-07

Lavigne v OPSEU: Union Dues and Charter Rights

A constitutional challenge regarding the use of compulsory union dues for non-collective bargaining purposes. The court addressed whether such use violated section 2(d) of the Charter and structured a remedy to minimize infringement of freedom of association.

labour relations charter rights union dues freedom of association constitutional law

Re Service Employees' International Union, Local 204 and Broadway Manor Nursing Home et al. and two other applications

1983 CanLII 1928 (ON SC) · 1983-10-24

This is a constitutional challenge regarding the validity of the Inflation Restraint Act, 1982, as it applied to extended collective agreements for public sector employees. The central legal issues concern whether the Act's retrospective alteration of collective agreements infringed upon the freedom of association under section 2(d) and security of the person under section 7 of the Charter, and if so, whether such infringements were justified under section 1.

labour relations charter rights freedom of association collective agreements constitutional law

Re Terzian et al. and Workmen's Compensation Board et al.

1983 CanLII 1834 (ON SC) · 1983-04-29

Workers' Comp: Right to Sue vs Charter Rights

This is a constitutional challenge concerning the validity of workers' compensation legislation that removes the right to sue for workplace injuries. The court examined whether removing the right to bring an action for damages violates the right to 'security of the person' under section 7 of the Charter and whether such removal is justified under section 1. The court also addressed jurisdictional issues regarding the administrative tribunal's authority under section 96 of the Constitution Act, 1867.

workers compensation right to sue charter rights workplace injury constitutional law

Re Ontario Public Service Employees Union et al. and Attorney-General for Ontario

1979 CanLII 1797 (ON SC) · 1979-04-11

Crown Employee Political Activity Restrictions

This is a constitutional decision regarding the validity of provisions in the Public Service Act that restricted the political activities of Crown employees in Ontario. The court upheld the provisions as valid labour legislation regulating conditions of employment under provincial jurisdiction, finding they did not infringe on fundamental political rights or conflict with federal legislation.

labour relations crown employees political activities constitutional law provincial jurisdiction

Re Canadian Union of Public Employees et al. and Guelph General Hospital et al.

1978 CanLII 1482 (ON SC) · 1978-10-26

This is a constitutional and labour relations case concerning the jurisdiction of administrative tribunals versus superior courts. The dispute involves the Canadian Union of Public Employees and Guelph General Hospital, focusing on the interpretation of the Labour Relations Act and section 96 of the British North America Act, 1867.

labour relations constitutional law jurisdiction administrative tribunals

Re Four B Manufacturing Ltd. and United Garment Workers of America

1977 CanLII 1054 (ON SC) · 1977-06-20

Labour Relations Jurisdiction on Indian Reserve

This is a constitutional law case concerning labour relations jurisdiction. The court determined whether the Ontario Labour Relations Act or the Canada Labour Code applied to an employer operating on an Indian reserve, analyzing federal paramountcy and the 'Indianness' test under section 91(24) of the British North America Act, 1867.

labour relations federal jurisdiction indigenous peoples constitutional law paramountcy

Re Essex County Roman Catholic Separate School Board and Porter et al.

1977 CanLII 1292 (ON SC) · 1977-06-17

Constitutional Challenge: Teacher Dismissal Rights

This is a constitutional law case concerning the validity of provincial legislation that empowered a Board of Reference to reinstate teachers dismissed by denominational school boards. The court held that the legislation was ultra vires as it prejudicially affected denominational rights protected under section 93(1) of the British North America Act, 1867. The court further upheld the school boards' authority to dismiss teachers for denominational reasons, such as contracting civil marriages, and found that the Board of Reference lacked jurisdiction to override these rights.

constitutional law denominational schools teacher dismissal section 93 ultra vires

Re Dairy Maid Chocolates Ltd.

1972 CanLII 347 (ON SC) · 1972-12-20

Vacation Pay Trust in Bankruptcy

This is a constitutional and insolvency ruling concerning the validity of a trust created by provincial employment standards legislation for unpaid vacation pay. The court determined that the Employment Standards Act validly created a trust for employees' vacation pay, which operates as a charge against employer assets and is excluded from divisible assets under federal bankruptcy law.

vacation pay bankruptcy trust employment standards constitutional law

Regina v. Ontario Labour Relations Board, Ex parte Dunn

1963 CanLII 261 (ON SC) · 1963-04-16

Constitutional Validity of Labour Board Jurisdiction

This is a constitutional law case involving judicial review of the Ontario Labour Relations Board's jurisdiction. The court examined the constitutional validity of the Board's authority under sections 92(10)c) and 91 of the B.N.A. Act, 1867, specifically regarding the division of powers between federal and provincial jurisdictions over labour relations.

labour relations constitutional law judicial review jurisdiction

Pronto Uranium Mines Limited v. The Ontario Labour Relations Board et al. Algom Uranium Mines Limited v. The Ontario Labour Relations Board et al.

1956 CanLII 153 (ON SC) · 1956-08-31

Uranium Mining Labour Jurisdiction: Federal vs Provincial

This is a constitutional and jurisdictional ruling concerning the validity of provincial labour legislation as it applies to employees of uranium mining companies. The court addressed whether federal control under The Atomic Energy Control Act precluded the Ontario Labour Relations Board from exercising jurisdiction over the certification of bargaining agents for these workers.

labour relations jurisdiction atomic energy constitutional law certification

Local 100, United Steel Workers of America v. Steel Company of Canada Limited

1944 CanLII 115 (ON SC) · 1944-04-06

Constitutional Validity of Provincial Collective Bargaining Act

A constitutional reference regarding the validity of The Collective Bargaining Act, 1943 (Ont.) and its applicability to war industries. The court examined whether the Act fell within provincial jurisdiction under section 92 of the British North America Act, 1867, and whether it conflicted with federal legislation like The Industrial Disputes Investigation Act and The War Measures Act.

labour relations constitutional law collective bargaining provincial jurisdiction division of powers