5 Legal Issues Employers Face When Using Subcontractors in Ontario

Many employers in Ontario rely on subcontractors to provide flexibility and cost savings. However, engaging subcontractors comes with significant legal risks. Here are five key legal issues employers should be aware of:

1. Employee vs. Independent Contractor Classification

One of the most critical legal risks is misclassifying a worker as a subcontractor when they should be considered an employee. If a subcontractor is found to be an employee, the employer could be liable for unpaid wages, vacation pay, CPP and EI contributions, and potential wrongful dismissal claims. Courts and government agencies assess classification based on factors such as control, integration, financial risk, and ownership of tools.

2. Liability for Workplace Injuries

Employers who use subcontractors must ensure they comply with the Workplace Safety and Insurance Act (WSIA). If a subcontractor is not covered by WSIB or is misclassified as an independent contractor, the employer may be liable for workplace injuries. Additionally, under Ontario’s Occupational Health and Safety Act (OHSA), employers have a duty to ensure a safe work environment, even for subcontractors including clear policies on harassment and discrimination.

3. Tax and Payroll Obligations

The Canada Revenue Agency (CRA) closely scrutinizes independent contractor arrangements. If a subcontractor is deemed an employee, the employer may be responsible for back taxes, penalties, and interest on unremitted Canada Pension Plan (CPP) and Employment Insurance (EI) contributions. Employers must ensure that contracts properly reflect the independent nature of the relationship and that subcontractors meet tax obligations.

4. Termination and Constructive Dismissal Risks

Unlike employees, subcontractors are generally not entitled to notice or severance upon termination unless their contract specifies otherwise. However, if a subcontractor is effectively treated as an employee over time, they may argue for wrongful dismissal or constructive dismissal if their work is suddenly terminated or significantly altered. Clear, well-drafted contracts can help mitigate these risks.

5. Vicarious Liability and Contractual Risks

Employers can be held liable for the actions of subcontractors, particularly if they are acting under the employer’s direction. If a subcontractor causes damage, injury, or contractual breaches, the employer could face legal and financial consequences. It’s essential to have well-defined contracts outlining responsibilities, indemnification clauses, and appropriate insurance coverage.

How an Experienced HR Consultant Can Help

D&DCPD has experience not only in Human Resources but also experience in litigation in labour and employment law.  As such, we can provide invaluable guidance to employers navigating these challenges. We can help by:

• Drafting and reviewing contracts to ensure clear terms and compliance with employment laws.

• Advising on worker classification to prevent misclassification risks and related liabilities.

• Assisting with WSIB and workplace safety compliance to mitigate injury-related risks.

• Providing legal risk assessments and strategies for subcontractor relationships.

• Ensuring proper termination procedures to avoid wrongful dismissal or constructive dismissal claims.

• Implementing best practices to minimize vicarious liability and contractual disputes.

  
  

Best Practices for Employers

To mitigate these risks, employers should:

• Use clear, well-drafted contracts outlining the nature of the relationship.

• Ensure subcontractors meet their tax and WSIB obligations.

• Avoid excessive control over subcontractors to maintain independent contractor status.

• Require subcontractors to have liability insurance.

• Seek legal advice when engaging and dealing with subcontractors on a day-to-day basis to ensure compliance.

  
  

Understanding these legal issues can help employers avoid costly disputes and liabilities while maintaining a flexible workforce. Proper planning and adherence to employment laws are key to successfully using subcontractors in Ontario.  If you are a contractor or employer who uses the services of a contractor or subcontractor contact our office to discuss how we can assist in protecting your business.