Every small and mid-sized business will eventually face it: the difficult employee.

Sometimes it is a chronic underperformer. Sometimes it is a high-performing but disruptive personality. Sometimes it is an employee who resists direction, undermines management, or generates repeated complaints. In other cases, the issue may involve absenteeism, conflict with colleagues, or refusal to adapt to evolving workplace expectations.

For Ontario employers, the challenge is not simply managing workplace disruption. It is doing so in a way that does not create wrongful dismissal exposure, constructive dismissal claims, or human rights liability.

The goal is not merely to terminate. The goal is to terminate defensibly or, ideally, to resolve performance concerns before termination becomes necessary.

The Legal Framework Governing Performance Management

Employment relationships in Ontario are governed by both the Employment Standards Act (ESA) and the common law. While the ESA establishes minimum standards, most termination disputes are assessed under common law principles.

An employer may terminate an employee without cause, provided appropriate notice or pay in lieu of notice is given. However, where an employer alleges “just cause,” the legal threshold is high. Courts reserve cause for serious misconduct or repeated, documented performance failures.

Many employers underestimate how difficult it is to establish cause. Poor documentation, inconsistent discipline, or emotional decision-making can undermine a cause allegation and increase litigation risk. Effective performance management reduces this exposure.

Progressive Discipline: Structure Matters

Progressive discipline is not legally mandatory in every case, but it is often critical in defending performance-based terminations.

A structured approach typically involves identifying concerns, communicating expectations, providing an opportunity to improve, and documenting each step. When properly implemented, it demonstrates fairness and reduces the likelihood that a termination will appear arbitrary.

For SMEs without formal HR departments, discipline may occur informally through conversations or emails. While informal communication can be appropriate, it must still be clear, consistent, and documented.

If concerns are not clearly articulated, an employee may later argue they were unaware of performance deficiencies. Courts frequently scrutinize whether an employer gave the employee a genuine opportunity to improve.

Performance Improvement Plans (PIPs): When and How to Use Them

Performance Improvement Plans are commonly used tools for addressing performance concerns. However, poorly structured PIPs can create legal risk.

A defensible PIP should outline specific concerns, measurable objectives, timelines for improvement, and potential consequences if expectations are not met. Vague or unrealistic expectations may undermine the employer’s position.

Employers should also ensure that PIPs are not used in a manner that appears punitive or retaliatory. For example, imposing a PIP immediately after an employee raises a workplace complaint may trigger allegations of reprisal.

When implemented thoughtfully, PIPs can demonstrate good faith efforts to support improvement. When implemented carelessly, they can strengthen an employee’s litigation narrative.

Constructive Dismissal Risks During Performance Management

Employers sometimes respond to performance concerns by reducing responsibilities, cutting compensation, or significantly altering reporting structures. While these changes may appear operationally justified, they can give rise to constructive dismissal claims if implemented unilaterally.

Constructive dismissal occurs when an employer makes a fundamental change to the employment relationship without the employee’s consent. Demotions, substantial pay reductions, or significant changes in duties may qualify.

For growing businesses undergoing restructuring, performance management must be coordinated with broader organizational changes. Otherwise, attempts to address underperformance may inadvertently increase liability. Before making material changes to an employee’s role, it is prudent to assess legal risk.

Human Rights Considerations in Performance Issues

Performance concerns do not exist in a vacuum. If an employee’s conduct or productivity issues are linked to a protected ground under Ontario’s Human Rights Code — such as disability, family status, religion, or age — the employer’s duty to accommodate may be engaged.

For example, absenteeism related to mental health or addiction requires a different analysis than absenteeism arising from disengagement. Similarly, productivity declines linked to caregiving obligations may require accommodation measures.

Employers are not required to tolerate indefinite underperformance. However, they must assess whether accommodation to the point of undue hardship is required.

Failing to consider human rights obligations before terminating a difficult employee can significantly increase exposure, as human rights damages often exceed standard wrongful dismissal damages.

Managing Toxic Behaviour Without Escalation

Some difficult employees are not underperforming but instead create workplace disruption through conflict, bullying, or insubordination. Ontario employers have obligations to maintain a harassment-free workplace. When complaints arise, a prompt and appropriate investigation is essential.

However, discipline arising from harassment investigations must be proportionate and supported by findings. Overreaction can lead to allegations of unfair treatment. Underreaction can expose the business to liability for failing to maintain a safe workplace.

Balancing workplace morale, fairness, and legal risk requires a measured approach. SMEs often struggle with this balance because workplace relationships are more personal, and hierarchical structures are less formal. Maintaining professionalism during conflict is critical.

Documentation: The Employer’s Strongest Defence

In employment litigation, documentation often determines the outcome. Courts look for evidence of consistent feedback, clear expectations, and progressive steps taken to address concerns. A termination letter citing “performance issues” carries little weight if there is no prior documentation.

Effective documentation should be factual, objective, and free from emotional language. Emails sent in frustration may later undermine an employer’s credibility.

Growing businesses should ensure that managers understand basic documentation principles. Informal texts or verbal warnings, if not documented, may not support a defensible termination. Good documentation does not guarantee litigation avoidance, but poor documentation significantly increases risk.

When Termination for Cause Is Appropriate

Termination for cause eliminates the obligation to provide notice or pay in lieu. However, courts apply a contextual analysis and reserve cause for serious misconduct or cumulative failures despite warnings.

Examples may include dishonesty, serious insubordination, harassment, or repeated performance failures following progressive discipline.

Employers who allege cause without sufficient evidence risk not only losing in court but also damaging their credibility. In many cases, terminating without cause and providing appropriate notice is strategically safer.

Careful legal assessment before asserting cause is advisable, particularly for senior employees or those with long service.

Avoiding Reprisal Claims

Ontario law prohibits reprisal against employees for asserting statutory rights, including complaints about unpaid wages, health and safety issues, or human rights concerns.

If performance management begins shortly after an employee raises a complaint, timing alone may fuel allegations of reprisal.

Employers should ensure that discipline is clearly linked to documented performance issues, not to protected activity.

Consistency across the organization is also important. Disciplining one employee for behaviour tolerated in others may support allegations of unfair treatment.

Balancing Business Needs and Legal Risk

Managing difficult employees requires balancing operational efficiency with legal compliance. Allowing chronic disruption to persist can harm morale and productivity. Acting impulsively can trigger litigation.

A structured, documented, and legally informed approach protects both business stability and defensibility.

Ontario employment law does not require perfection from employers. It requires fairness, consistency, and adherence to statutory obligations. When handled properly, performance management can resolve issues constructively. When termination becomes necessary, a well-documented process reduces exposure.

Haynes Law Firm: Advising Toronto Employers on Employee Discipline, Performance Management, and Termination

Difficult employee situations are rarely just operational challenges. They are legal risk points. Before implementing a performance improvement plan, restructuring a role, or terminating an employee for cause, it is prudent to assess your exposure.

As a top-tier Toronto employment lawyer advising both employers and employees, Paulette Haynes understands how performance disputes are litigated and how to structure discipline and termination decisions in a defensible manner. She works with small- and mid-sized Ontario businesses to strategically manage workplace conflict and reduce litigation risk.

Before frustration turns into a lawsuit, protect your business. Contact Haynes Law Firm online or call (416) 593-2731 to schedule a consultation today.