What is Gross Misconduct? Examples and Consequences

Gross misconduct is behaviour so serious that it fundamentally destroys the trust and confidence between employer and employee, justifying immediate dismissal without notice. But what counts as gross misconduct, and what procedure should you follow?

What Makes Misconduct "Gross"?

The key test is whether the conduct is so serious that it:

• Fundamentally breaches the employment contract
• Destroys the relationship of trust and confidence
• Makes continued employment impossible

It's not just about severity - context matters. The same act might be gross misconduct in one workplace but ordinary misconduct in another.

Common Examples of Gross Misconduct

Dishonesty and Fraud

• Theft from the employer, colleagues, or customers
• Fraud or deliberate falsification of records
• Claiming expenses dishonestly
• Time sheet fraud

Violence and Threats

• Physical assault on colleagues or customers
• Threats of violence
• Bringing weapons to work
• Fighting in the workplace

Serious Insubordination

• Refusing a reasonable and lawful instruction
• Deliberate and serious breach of company rules
• Walking out without permission

Harassment and Discrimination

• Sexual harassment
• Racial harassment
• Bullying
• Discriminatory behaviour

Health and Safety Breaches

• Serious negligence causing danger to others
• Deliberately disabling safety equipment
• Being under the influence of drugs or alcohol at work (in safety-critical roles)

Damage to Employer's Reputation

• Serious breach of confidentiality
• Bringing the company into disrepute
• Disclosing trade secrets

IT and Data Misuse

• Deliberately introducing malware
• Accessing systems without authorisation
• Serious misuse of company IT
• Data protection breaches

Important: Context Matters

Whether an act is gross misconduct depends on:

• The employee's role - A security guard fighting is more serious than an office worker
• The workplace - Drug use in a warehouse is more serious than in an office
• The consequences - Accidentally vs. deliberately causing harm
• Company rules - What does your policy say?

Examples That May NOT Be Gross Misconduct

• One-off poor performance
• Genuine mistakes
• Minor disagreements with colleagues
• Being late occasionally
• Minor breaches of policy

Can You Dismiss Without Notice?

For gross misconduct, you can dismiss:

• Without notice - No requirement to give contractual notice
• Without pay in lieu of notice - You don't have to pay them for the notice period

However, you must still:

• Pay any accrued holiday
• Pay salary up to the dismissal date
• Issue P45 and final payslip

The Procedure Still Applies

Critical point: Even for the most serious gross misconduct, you must still follow a fair procedure:

1. Suspend (if appropriate) on full pay while investigating
2. Investigate thoroughly - gather evidence, interview witnesses
3. Write to the employee with the allegations and evidence
4. Hold a disciplinary meeting - let them respond
5. Allow them to be accompanied by a colleague or union rep
6. Make your decision after considering their response
7. Confirm in writing with reasons
8. Offer an appeal

What If You Skip the Procedure?

If you dismiss without any procedure, the dismissal is likely to be unfair, even if the conduct was genuinely gross misconduct. The tribunal can increase compensation by up to 25% for failure to follow the ACAS Code.

Gross Misconduct vs. Ordinary Misconduct

Factor	Ordinary Misconduct	Gross Misconduct
Severity	Less serious	Fundamental breach
Response	Warning	Can dismiss
Notice	Must give notice	Can dismiss without
Examples	Late, minor policy breach	Theft, violence, fraud
Procedure	Warnings first	Can dismiss first time

What To Include in Your Policy

Your disciplinary policy should:

• Define what your company considers gross misconduct
• Give examples (but state the list isn't exhaustive)
• Explain the procedure that will be followed
• Make clear that gross misconduct may result in summary dismissal

Red Flags to Watch For

Before concluding something is gross misconduct, ask:

• Have I investigated properly?
• Could there be an innocent explanation?
• Have I treated similar cases consistently?
• Is dismissal within the range of reasonable responses?
• Have I followed a fair procedure?