Gross Misconduct In New Zealand: Employer Checklist For Dismissal

When you run a small business, you’re often working closely with your team. So when something goes seriously wrong, it can feel personal, urgent, and high-stakes all at once.

In New Zealand, serious misconduct (sometimes referred to as gross misconduct) can justify dismissal. But even if the behaviour is clearly unacceptable, you still need to follow a fair process. If you don’t, you can end up facing an unjustified dismissal claim at the Employment Relations Authority (and spending a lot of time, money, and energy dealing with it).

This guide breaks down what serious misconduct is in NZ, what common examples look like, and a practical employer checklist to help you manage a serious misconduct allegation from first report through to dismissal (if that’s where it lands).

What Is Serious Misconduct In NZ (And Why The Process Matters)

There isn’t one universal list in legislation that defines “serious misconduct” for every workplace. Instead, serious misconduct is generally understood as behaviour that is so serious it destroys (or seriously damages) the trust and confidence required in the employment relationship.

In practice, serious misconduct is often the kind of conduct that may justify summary dismissal (dismissal without notice). But here’s the important part: even in serious misconduct situations, you still have to act fairly.

Under the Employment Relations Act 2000, a dismissal must be what a fair and reasonable employer could have done in all the circumstances (the test in s103A). That involves both:

• Substantive justification (was there a good reason?), and
• Procedural fairness (did you follow a fair process?).

Even where the alleged conduct looks like clear serious misconduct, an employer can still lose a case if they:

• jump straight to termination without investigating
• don’t give the employee a chance to respond
• predetermine the outcome (“we’ve decided to fire you” before hearing them out)
• treat similar employees differently without a defensible reason

It can feel frustrating when you “know” what happened, but taking the time to follow a proper process is a key part of protecting your business.

What Are Examples Of Serious Misconduct?

Serious misconduct examples vary by industry, role, and workplace policies, but there are some common categories that regularly come up across NZ workplaces.

Here are examples of serious misconduct that may justify dismissal (depending on the facts):

1) Theft, Fraud, Or Dishonesty

• stealing money, stock, tools, or equipment
• falsifying timesheets or expenses
• dishonest conduct that undermines trust (even if the dollar value is small)

2) Violence, Threats, Or Serious Bullying

• physical assault or fighting at work
• threatening behaviour towards staff, customers, suppliers, or the public
• serious bullying/harassment that risks health and safety

3) Serious Health And Safety Breaches

Under the Health and Safety at Work Act 2015, you have duties to provide a safe workplace, and workers have duties to take reasonable care. Some health and safety breaches can amount to serious misconduct, especially where they are deliberate or reckless.

• working while impaired in a safety-sensitive role
• deliberately ignoring lockout/tagout procedures
• tampering with safety equipment

4) Drugs And Alcohol At Work (Where It Creates Serious Risk)

Drug or alcohol use isn’t automatically serious misconduct in every workplace. It often depends on your policies, the employee’s role, and the risk involved (for example, driving, operating machinery, working with vulnerable people, or customer-facing roles).

If you rely on testing or searches, your processes and paperwork matter a lot. Many businesses build this into an Employee Privacy Handbook or related workplace policies to keep expectations clear.

5) Serious Breaches Of Confidentiality Or Privacy

• sharing customer data without authority
• unauthorised access to payroll or HR files
• disclosing trade secrets or sensitive business information

These situations may also overlap with your obligations under the Privacy Act 2020, particularly if personal information has been mishandled.

6) Serious Insubordination Or Refusal To Follow Lawful Instructions

• refusing to follow a lawful and reasonable instruction (especially where it creates safety or compliance risk)
• abusive or aggressive behaviour towards managers

Often, serious insubordination is judged in context: what was the instruction, how was it communicated, and what impact did the refusal have?

A Quick Note On “Misconduct” Vs “Serious Misconduct”

Not every workplace issue is serious misconduct. Many issues are better treated as “misconduct” (for example, repeated lateness, minor breaches of policy, or performance issues). Those usually require a graduated response (warnings, training, clear expectations) rather than jumping to dismissal.

If you’re already in the performance management space (as opposed to a one-off serious incident), the process tends to look different. In that case, it’s worth aligning your approach with a proper performance management process.

Employer Checklist: Immediate Steps When Serious Misconduct Is Reported

When a serious misconduct allegation lands on your desk, it’s normal to want to act fast. The trick is to move quickly without skipping steps.

Here’s a practical serious misconduct checklist for NZ employers at the “day one” stage.

Step 1: Ensure Immediate Safety And Contain Risk

• If there’s any risk of harm, take immediate steps to protect staff and customers (separate people, send someone home, secure the area).
• If you operate in a high-risk environment, think about your health and safety duties and your broader duty of care.
• If the incident might involve criminal conduct (e.g. assault, theft), you can consider whether it’s appropriate to report it to the police. Employment process obligations still apply, and any criminal issues are separate to the employment relationship.

Step 2: Preserve Evidence (Without Turning It Into A Witch Hunt)

• Secure CCTV footage, access logs, POS logs, emails, messages, and any relevant documents.
• Take notes of what was reported, by whom, and when (date-stamped notes can be very helpful later).
• Be careful not to “over-collect” or share information widely, especially where privacy is involved.

If you use cameras, make sure you’re doing it lawfully and consistently. Workplace surveillance is a common flashpoint in disputes, so it’s worth checking your approach against guidance on cameras in the workplace.

Step 3: Consider Suspension (Only If Justified)

Sometimes you may need the employee out of the workplace while you investigate (for example, to prevent interference with evidence, to protect others, or where there’s an ongoing safety risk).

Suspension should not be automatic. You generally need to:

• consider whether there are alternatives (changed duties, supervision, temporary reassignment)
• raise suspension as a proposal, explain why you’re considering it, and give the employee a reasonable opportunity to respond before deciding
• think carefully about pay: suspension is commonly on full pay. If you’re considering suspension without pay, get advice first and check whether your employment agreement clearly allows it (and whether additional steps/consent are needed in the circumstances)

Handled well, suspension can protect your business and your team. Handled poorly, it can look like you’ve already decided the employee is guilty.

Step 4: Check Your Paperwork Before You Act

Before you start interviews or send a disciplinary letter, quickly check what documents apply:

• the employee’s Employment Contract (including any disciplinary process clauses)
• your workplace policies (code of conduct, health and safety, alcohol/drug policy, privacy, conflicts)
• any past warnings or relevant history (but be careful not to rely on irrelevant “bad feeling”)

This step helps you stay consistent and reduces the chance of missing a contractual requirement.

How To Run A Fair Investigation And Disciplinary Process

If you want to manage serious misconduct properly, the investigation stage is where most of the work happens. It’s also where many employers accidentally create risk by rushing, making assumptions, or skipping the response step.

A fair process usually includes the following building blocks.

1) Be Clear About The Allegations

You should be able to clearly state:

• what behaviour is alleged
• when and where it occurred
• what evidence you currently have (in summary form)
• which policies or contractual terms may have been breached
• that dismissal is a possible outcome (if it is)

A vague allegation like “bad attitude” isn’t going to cut it for serious misconduct. You need specifics.

2) Investigate With An Open Mind

Try to approach the investigation as “fact finding,” not “case building.”

• Interview witnesses separately.
• Ask open questions first (“Tell me what you saw”), then clarify.
• Take careful notes and confirm key points.
• Look for inconsistencies and alternative explanations.

In a small business, this can be awkward because everyone knows everyone. Still, the fairness standard doesn’t disappear just because your workplace is small.

3) Give The Employee A Genuine Chance To Respond

This is a big one. The employee needs enough information and time to respond meaningfully.

That usually means:

• inviting them to a meeting in writing
• setting out the allegations and possible consequences (including dismissal)
• sharing relevant evidence (as appropriate)
• allowing them to bring a support person or representative
• giving reasonable time to consider their response

Even if the employee’s explanation seems unlikely, you still need to listen, consider it, and keep records showing you did.

4) Consider Mitigating Factors Before You Decide

Before you move from “what happened” to “what we do about it,” consider:

• the employee’s length of service and disciplinary record
• whether they’ve admitted wrongdoing or shown genuine remorse
• whether training, supervision, or unclear instructions contributed
• whether the conduct was intentional, reckless, or accidental
• consistency: how you’ve handled similar conduct before

Serious misconduct can still lead to dismissal, but you want your decision to be defensible as fair and reasonable in the circumstances.

5) Confirm The Outcome In Writing

Whatever you decide (warning, final warning, dismissal), put it in writing with:

• the findings (what you concluded happened)
• the reasons (why it’s misconduct/serious misconduct)
• the outcome and when it takes effect
• any expectations going forward (if employment continues)
• the right to raise a personal grievance and relevant timeframes (where appropriate)

If you’re unsure whether your process is holding up, it’s often safer to get legal help early rather than trying to “fix it later.”

Can You Dismiss For Serious Misconduct Without Notice?

Serious misconduct is one of the few situations where dismissal without notice (often called summary dismissal) may be justified. However, you should be cautious about treating serious misconduct as an automatic green light to terminate on the spot.

In most cases, you still need to:

• investigate
• put allegations to the employee
• consider their response
• make a reasoned decision

If dismissal is the outcome, questions that often come up are:

Do You Have To Pay Notice Or Can You Pay In Lieu?

Whether notice is required depends on the nature of the dismissal and the wording of the employment agreement.

• If it’s genuinely summary dismissal for serious misconduct, notice may not be required.
• If you decide to terminate with notice (or your agreement requires it in the circumstances), you may need to either have the employee work the notice period or make payment in lieu of notice (if allowed under the agreement).

This is one area where getting advice can save you from an expensive mistake, especially if the facts are messy or disputed.

Do You Need To Follow A Particular Termination Process?

Even with serious misconduct, the key is that the overall dismissal must be justifiable. If you want a clean, defensible approach, align the outcome letter and steps with best practice on how to terminate an employee.

What If You Suspect Misconduct But Don’t Have Proof Yet?

If you don’t yet have enough evidence, it’s usually better to treat it as an allegation requiring investigation, rather than stating it as fact. Premature conclusions are a common reason dismissals are challenged.

Where you have genuine grounds for concern (for example, a safety risk or risk of interference), suspension on full pay while you investigate may be appropriate, but you still need to run a fair suspension process.

After The Decision: Practical Steps To Protect Your Business

Once you’ve dealt with the incident, there are a few follow-up steps that can reduce the chance of repeat issues and strengthen your “legal foundations” going forward.

1) Secure Company Property And System Access

• collect keys, devices, uniforms, tools, and ID cards
• remove or update passwords, app access, and logins
• redirect emails if needed (carefully and with privacy in mind)

2) Be Careful With What You Tell The Team

It’s tempting to reassure staff by sharing details, but employment matters are sensitive. Keep communications short and need-to-know. If the incident involved personal information, remember your privacy obligations.

3) Review Policies And Contracts For Gaps

Serious misconduct incidents often expose unclear expectations. You might consider tightening:

• code of conduct and disciplinary policies
• privacy and surveillance rules
• social media/confidentiality expectations
• conflicts of interest

If you’re also trying to protect customer lists, pricing, and key relationships, you may want to review your confidentiality and restraint clauses. A properly drafted Non-compete agreement (or other restraint/confidentiality terms) may be relevant, but it needs to be tailored to be enforceable and reasonable.

4) Document Everything And Keep Records

If the employee raises a personal grievance later, your notes and letters will matter. Keep a secure file with:

• the complaint/report
• witness statements and interview notes
• copies of evidence reviewed
• invitation letters and meeting notes
• the outcome letter

Good record-keeping isn’t about “building a case” against someone. It’s about being able to show you acted fairly and reasonably if your decision is challenged.

Key Takeaways

• Serious misconduct in NZ is generally conduct that fundamentally damages trust and confidence and may justify dismissal, but it’s assessed in context.
• Common serious misconduct examples include theft/fraud, violence or threats, major health and safety breaches, serious harassment/bullying, and serious confidentiality/privacy breaches.
• Even if the conduct could amount to gross misconduct, you still need a fair investigation and disciplinary process, including giving the employee a genuine chance to respond.
• Suspension can be an option where necessary, but it should be considered carefully (and usually raised as a proposal first) to avoid looking like you’ve already decided the outcome.
• Dismissal for serious misconduct may be without notice, but you should check the employment agreement and approach notice and payment in lieu carefully.
• Clear policies, well-drafted employment contracts, and good documentation help you manage misconduct consistently and protect your business long-term.

If you’d like help managing a serious misconduct process, reviewing your employment documents, or making sure a dismissal process is handled fairly, you can reach us at 0800 002 184 or team@sprintlaw.co.nz for a free, no-obligations chat.