When Does Employer Conduct Amount to Breach of Contract Leading to Dismissal Claims?

Employment relationships in England and Wales are governed by a combination of statutory rights, contractual obligations, and implied legal duties. While many dismissal claims focus on an employer actively terminating employment, some claims arise because the employer’s own conduct breaches the employment contract.

In certain circumstances, an employer’s actions may be so serious that they amount to a fundamental breach of contract. This can give rise to claims for constructive dismissal, unfair dismissal, wrongful dismissal, or breach of contract, depending on the circumstances. The law recognises that employees should not be forced to continue working where an employer has fundamentally failed to honour its contractual obligations.

This article explains when employer conduct becomes a breach of contract, the types of behaviour that commonly give rise to claims, how tribunals assess such cases, and the legal remedies that may be available.

Understanding Breach of Contract in Employment Law

A breach of contract occurs when one party fails to comply with the terms of the employment agreement.

Employment contracts contain:

• Express terms that are written into the contract
• Implied terms that exist automatically under the law
• Duties arising from common law and employment legislation

Not every breach gives rise to dismissal-related claims. For a resignation to become a constructive dismissal, the breach must usually be sufficiently serious to amount to a fundamental or repudiatory breach of contract.

Express Terms and Implied Terms

Express Terms

Express terms are the written provisions contained within employment contracts, policies that form part of the contract, or other contractual documents.

Examples include:

• Salary and benefits
• Hours of work
• Job title and duties
• Place of work
• Notice periods
• Bonus arrangements where contractually guaranteed

An employer’s failure to comply with these obligations may constitute a contractual breach.

Implied Terms

Some obligations exist even if they are not written down.

The most significant implied term in dismissal-related claims is the duty of mutual trust and confidence, which requires employers and employees not to act in a way that seriously damages the employment relationship without proper cause.

The Implied Duty of Trust and Confidence

Virtually every employment contract contains an implied duty of mutual trust and confidence.

This means employers should:

• Treat employees fairly and respectfully
• Act honestly
• Avoid conduct likely to destroy the working relationship
• Not behave in an entirely unreasonable manner without proper cause

ACAS identifies examples of potential breaches, including deliberately failing to pay wages, refusing to investigate grievances, or demoting an employee without good reason.

Where the breach is sufficiently serious, an employee may resign and claim constructive dismissal.

Non-Payment or Underpayment of Wages

One of the clearest examples of breach of contract occurs when an employer fails to pay an employee correctly.

Examples include:

• Failure to pay salary
• Persistent late payment of wages
• Unauthorised deductions
• Failure to pay contractual bonuses
• Failure to pay contractual sick pay

Regular non-payment of wages may amount to a fundamental breach of contract capable of supporting a constructive dismissal claim.

Unilateral Changes to Employment Terms

Employers cannot generally impose major contractual changes without agreement.

Potential breaches include:

• Significant reductions in pay
• Major changes to working hours
• Relocation requirements outside contractual terms
• Demotions without contractual authority
• Removal of contractual benefits

A substantial unilateral change may amount to a repudiatory breach, particularly where it affects a fundamental term of employment.

Unjustified Demotion

Demotion can be a serious contractual issue.

A demotion may amount to a breach where it involves:

• Reduced status
• Reduced responsibilities
• Reduced pay
• Loss of managerial authority

ACAS specifically identifies unjustified demotion as conduct that may breach the duty of trust and confidence.

Bullying, Harassment and Workplace Mistreatment

An employer has obligations to provide a safe and respectful working environment.

Conduct that may amount to a contractual breach includes:

• Persistent bullying
• Harassment by managers
• Failure to address complaints
• Humiliating treatment
• Intimidation or victimisation

A single serious incident or a series of less serious incidents can collectively undermine trust and confidence.

Failure to Address Grievances

Employers are expected to deal reasonably with employee complaints.

Problems may arise where an employer:

• Refuses to investigate grievances
• Ignores formal complaints
• Conducts sham investigations
• Delays matters unreasonably
• Fails to follow grievance procedures

ACAS expressly recognises refusal or failure to examine grievances as conduct capable of breaching trust and confidence.

Health and Safety Failures

Employers owe employees important health and safety obligations.

Potential breaches include:

• Ignoring serious safety concerns
• Failing to provide safe systems of work
• Exposing employees to avoidable risks
• Refusing to investigate workplace hazards

Serious failures may contribute to constructive dismissal claims and other employment claims.

Discrimination and Unlawful Treatment

Discriminatory conduct may simultaneously:

• Breach the Equality Act 2010
• Breach contractual obligations
• Destroy trust and confidence

Examples include discrimination based on:

• Race
• Sex
• Disability
• Age
• Religion or belief
• Sexual orientation
• Pregnancy and maternity

Where discrimination is serious or ongoing, it may contribute to a constructive dismissal claim alongside separate discrimination proceedings.

Breach Through Disciplinary or Investigation Processes

Employers are expected to conduct disciplinary and grievance procedures fairly.

Potential breaches may arise where:

• Allegations are not investigated properly
• Hearings are fundamentally unfair
• Outcomes are predetermined
• Employees are denied the opportunity to respond

Although procedural mistakes do not automatically amount to contractual breaches, serious procedural unfairness can contribute to a breakdown of trust and confidence.

The “Last Straw” Principle

Constructive dismissal claims often arise from a pattern of conduct rather than one isolated incident.

The law recognises that:

• Individual incidents may appear minor
• Repeated conduct can accumulate over time
• A final incident may become the “last straw”

The final act does not necessarily have to be serious by itself. It may complete a course of conduct that ultimately destroys trust and confidence.

When Does a Breach Become Fundamental?

Not every breach justifies resignation.

Tribunals distinguish between:

Minor Breaches

Examples include:

• Administrative errors
• Isolated misunderstandings
• Minor procedural defects

These will not usually justify constructive dismissal.

Fundamental Breaches

Examples include:

• Persistent non-payment of wages
• Serious bullying
• Significant contractual changes without agreement
• Deliberate undermining of an employee
• Serious breaches of trust and confidence

These may entitle an employee to treat the contract as terminated.

Constructive Dismissal Claims

Where a fundamental breach occurs, an employee may resign and argue that the employer effectively dismissed them through its conduct.

To establish constructive dismissal, the employee generally must show:

1. A fundamental breach of contract occurred
2. They resigned because of that breach
3. They did not wait so long that they accepted the conduct

The legal foundation for constructive dismissal is found in section 95(1)(c) of the Employment Rights Act 1996.

The Risk of Delaying Resignation

Timing is important.

If an employee continues working for a significant period after a serious breach, a tribunal may conclude that they have affirmed the contract, meaning they accepted the employer’s conduct and lost the right to rely on that breach.

Each case depends on its facts, but prompt action is often a key issue in constructive dismissal litigation.

Tribunal Claims and Time Limits

Most constructive unfair dismissal claims must be started within:

Three months less one day from the effective date of termination.

Before issuing proceedings, claimants must usually notify ACAS and participate in Early Conciliation.

Potential Remedies

Where a dismissal-related claim succeeds, remedies may include:

• Basic award
• Compensatory award
• Notice pay
• Breach of contract damages
• Compensation for discrimination (where applicable)
• Reinstatement or re-engagement in rare cases

The available remedy depends on the specific claim being pursued.

Common Examples of Employer Conduct Leading to Claims

Claims frequently arise where employers:

• Stop paying wages properly
• Ignore serious grievances
• Bully or harass employees
• Make major contractual changes without consent
• Demote employees without justification
• Fail to address discrimination
• Create unsafe working environments
• Engage in conduct that destroys trust and confidence

In many successful cases, the issue is not a single event but a sustained pattern of unreasonable conduct.

Key Takeaways

Employer conduct amounts to a breach of contract leading to dismissal claims when it violates either an express contractual term or an implied contractual duty, particularly the duty of mutual trust and confidence. Serious examples include non-payment of wages, unilateral contractual changes, bullying, discriminatory treatment, unjustified demotion, failure to address grievances, and significant health and safety failures.

Where the breach is fundamental, an employee may resign and pursue a constructive dismissal claim. Employment Tribunals examine the seriousness of the conduct, whether trust and confidence were destroyed, whether the employee resigned because of the breach, and whether the claim was brought within the relevant time limits. Understanding these principles is essential for assessing whether employer conduct has crossed the line from poor management into actionable legal wrongdoing.