When Can New Zealand Employers Require a Medical Examination?

Asking a worker to attend a medical examination for employment can feel like a sensible risk step, especially if the role is physical, safety-sensitive, or customer-facing. But New Zealand employers often get this wrong. Common mistakes include demanding a medical check without a clear job-related reason, asking for far more health information than the business actually needs, and treating a medical report as a free pass to reject a candidate or remove an employee without following a fair process.

The legal answer is not simply whether an employer can ask. The better question is when a medical examination is genuinely necessary, what consent and privacy steps need to be in place, and how the result can be used lawfully in recruitment, employment contracts, and workplace management. If you are hiring your first worker, updating employment agreements, or dealing with a worker whose fitness for work is in doubt, this guide sets out the practical rules New Zealand businesses should check before they sign or make a decision.

Overview

A medical examination for employment can be lawful in New Zealand, but only where it is relevant, reasonable, and handled carefully. Employers need a genuine work-related reason, informed consent, and a process that respects privacy, anti-discrimination rules, and good faith obligations.

• Whether the role actually justifies a pre-employment or ongoing medical assessment
• What your employment agreement, job offer, or workplace policy says before you sign
• How to obtain clear and informed employee consent
• What health information is reasonably necessary, and what is excessive
• How privacy obligations apply to collecting, storing, and sharing medical information
• Whether the request could create discrimination or unjustified disadvantage risks
• What to do if a medical report raises fitness-for-work concerns or workplace adjustments

What Medical Examination for Employment Means For New Zealand Businesses

A medical examination for employment is not a standard box-ticking exercise. It is a targeted process used to assess whether a person can safely and reasonably perform the inherent requirements of a role.

In practice, these examinations come up at three main points in the employment relationship:

• Before hiring, where the role has genuine health or safety demands
• During employment, where there is a real concern about fitness for work
• After an injury, illness, or period of absence, where medical input is needed about capacity and return-to-work arrangements

For many office-based roles, a broad medical examination will be hard to justify. For roles involving driving, heavy lifting, hazardous environments, or public safety, a more specific assessment may be easier to support. The key is proportionality. The employer should only seek information that is actually relevant to the job.

Pre-employment medical checks

Before you hire, you can ask health-related questions or require a medical assessment if the questions are tied to the role and are necessary for making an informed employment decision. This often applies where the role has physical demands, exposure risks, fatigue management concerns, or duties where sudden incapacity could create serious safety issues.

That does not mean a business can ask for a full medical history because it feels prudent. A blanket requirement for every applicant, regardless of the role, can create legal risk. The safer approach is to identify the inherent requirements of the position first, then ask only for information that relates to those requirements.

For example, if you are hiring a warehouse worker who must repeatedly lift heavy items and operate equipment, asking about musculoskeletal capacity may be reasonable. Asking for unrelated details about long-past treatment or conditions that do not affect the role is much harder to justify.

Medical examinations during employment

An employer can sometimes require a medical assessment after employment has started, but the reason must be genuine and the process must be fair. This usually arises where there are credible concerns about whether the employee can safely perform their duties, whether there is a risk to others, or whether medical evidence is needed to assess workplace adjustments or return-to-work steps.

This is where founders often get caught. Concern, suspicion, or frustration is not enough on its own. If the real issue is performance, misconduct, or attendance management, a medical examination should not be used as a shortcut around a proper employment process.

Before directing an employee to attend an examination, employers should consider:

• What specific issue has raised the concern
• Whether there is evidence supporting that concern
• Whether the requested examination is proportionate to the issue
• Whether the employment agreement or workplace policy deals with medical assessments
• Whether other less intrusive steps are available first

Why consent and privacy matter

Medical information is highly sensitive personal information. Even where a business has a legitimate reason to seek it, the worker should understand what is being requested, why it is needed, who will receive the report, and how it will be used.

Under New Zealand privacy principles, employers should collect health information for a lawful purpose connected with their functions, and only where collection is necessary for that purpose. The business should not gather more information than it needs, and should keep it secure.

In practical terms, that means a consent form or request should usually spell out:

• The purpose of the examination
• The types of information being requested
• Whether the doctor is being asked specific fitness-for-work questions
• Who will see the report within the business
• How long the information will be retained
• Whether the employee can access the report

Many employers do not need a full diagnosis. Often what they really need is a functional assessment, such as whether the worker can lift a certain weight, drive safely, work at height, or return to work with adjustments. Narrowing the request can reduce privacy and discrimination risk.

Discrimination and fair treatment issues

A medical examination for employment can raise discrimination issues if health information is used unfairly. New Zealand employers cannot simply exclude a person because they have a medical condition. The real question is whether the person can perform the role, with reasonable adjustments if appropriate, and whether any restrictions create a genuine inability to do the job safely or effectively.

Before you reject a candidate or take action against an employee, you should separate these issues:

• What the medical condition is, if that needs to be known at all
• What the actual work limitations are
• Whether adjustments could address those limitations
• Whether health and safety duties create a real barrier to continued work in the role

A rushed decision based on assumptions can create personal grievance exposure, discrimination complaints, and reputational problems. A role-specific, evidence-based approach is much safer.

Legal Issues To Check Before You Sign

The best time to deal with medical examination clauses is before you sign an employment agreement or issue an offer. Clear written terms make it much easier to manage later fitness-for-work issues without overreaching.

Employment agreements and conditional offers

If you want to make employment conditional on a medical examination, say so clearly in the offer and agreement. The clause should explain the purpose of the examination and tie it to the requirements of the role.

A well-drafted clause will usually cover:

• When a pre-employment medical assessment may be required
• Whether the offer is conditional on satisfactory medical clearance
• What kind of assessment is relevant to the role
• Whether the employer can require further information if the report is unclear
• How the employer will pay for the examination

Vague wording can create disputes. If the clause simply says the business may require a medical at any time, that may be too broad in practice. Specific, purpose-based contract drafting works better.

Good faith obligations

New Zealand employment law requires parties to deal with each other in good faith. That matters when requesting a medical examination and when using the result.

Good faith usually means the employer should:

• Explain why the information is needed
• Give the employee a fair chance to comment
• Avoid surprising the employee with an overbroad request
• Share relevant concerns where appropriate
• Consider the employee's response before making decisions

If a business decides an employee is unfit for work without a fair process, the problem is often not just the medical issue itself. The process can become the bigger legal risk.

Privacy Act considerations

Before you collect any health information, ask whether it is necessary. That single question helps businesses avoid a lot of trouble.

You should also think about the handling of the report once it arrives. Medical information should be stored securely, access should be limited to people who genuinely need it, and the information should not be circulated casually between managers. If the report is no longer needed, retention should not continue without reason.

Where an external occupational health provider is involved, make sure responsibilities are clear. The business should know what report will be provided, whether the provider is answering a limited question, and how confidentiality will be managed under your privacy notice and internal processes.

Health and safety obligations

Sometimes a medical examination is justified because the employer has health and safety duties and needs to assess whether a worker can carry out a role without unacceptable risk. But health and safety should not be used as a broad excuse to demand medical information whenever a concern appears.

The safer approach is to connect the request to a specific risk. For example:

• A commercial driver reports blackouts or fatigue concerns
• A worker returning after surgery wants to resume heavy manual work
• An employee in a hazardous environment may be affected by medication or a condition that impacts alertness

The request should be focused on the workplace risk and the worker's capacity in relation to that risk.

Who pays for the examination?

Where the employer requires the medical examination for employment, the employer will usually be expected to pay for it. This is especially true for pre-employment checks that are part of the employer's recruitment process, or specialist assessments requested during employment.

Before you rely on a verbal promise, set this out in writing. Disputes about cost, timing, and choice of provider are common and easy to avoid.

Can you insist on your chosen doctor?

An employer may prefer an occupational health provider or a doctor familiar with workplace assessments, but insisting on a particular practitioner without a good reason can cause friction. The issue is usually not who the doctor is, but whether the assessment is independent, relevant, and based on the right questions.

Some businesses deal with this by requesting an examination from a nominated provider while allowing room to discuss alternatives where there is a legitimate concern. If there is disagreement, the employment agreement and the circumstances will matter.

Common Mistakes With Medical Examination for Employment

The biggest mistake is treating a medical report like a simple yes or no answer on employability. Most legal problems come from asking the wrong question, collecting too much information, or making a decision too quickly.

Using generic forms for every role

A standard medical questionnaire used across all positions can become excessive fast. A receptionist, software developer, field technician, and forklift operator do not have the same inherent job requirements.

Role-specific questions are easier to defend. Generic forms often collect irrelevant information that the business never needed in the first place.

Asking for diagnoses instead of work capacity

Businesses often think they need to know the employee's exact condition. In many cases, they do not. What they really need is practical information about capacity, restrictions, prognosis for return to work, and any workplace adjustments that may help.

When you ask for broad diagnostic information, you increase privacy risk and may gather sensitive details that should never influence the decision.

Skipping a fair process with current employees

If an employee's health may be affecting work, employers sometimes jump straight to suspension, pressure, or termination. That approach is risky.

A fairer path usually includes:

• Explaining the concern clearly
• Inviting the employee to respond
• Considering whether medical evidence is actually needed
• Narrowing the request to relevant issues
• Reviewing possible adjustments or alternatives before making final decisions

Where a worker is unwell, poor process can look especially harsh. That can become a significant issue if the decision is later challenged.

Ignoring reasonable adjustments

Some employers treat any restriction as proof the person cannot do the role. But temporary changes, modified duties, reduced hours, equipment changes, or a staged return to work may be workable.

Not every business can accommodate every adjustment, especially smaller businesses with lean teams. Still, the employer should turn its mind to realistic options before deciding the role cannot continue. A quick rejection without that assessment can be hard to justify.

Relying on old medical information

Medical information can become outdated quickly. A report from months ago may not reflect current capacity, treatment progress, or workplace realities.

Before you make a major decision, check whether the information is current enough and whether the original questions were the right ones. Old paperwork often gives false confidence.

Forgetting recruitment law risks

Pre-employment medical questions can create problems even before a contract is signed. If applicants are screened out based on irrelevant health information, the recruitment process may be vulnerable to challenge.

Train the people involved in hiring to understand the difference between:

• Questions about ability to perform the role safely and effectively
• Questions driven by curiosity, assumptions, or perceived inconvenience

This distinction matters most before you hire your first worker or when scaling quickly and delegating recruitment to managers who may not know the limits.

FAQs

Can an employer in New Zealand require a pre-employment medical examination?

Yes, but usually only where the examination is relevant and reasonably necessary for the role. The request should be connected to the inherent requirements of the job, not used as a blanket screening tool for every applicant.

Can an employee refuse to attend a medical examination?

Sometimes, yes. If the request is unclear, overbroad, or not supported by the contract or circumstances, refusal may be understandable. If the request is reasonable and linked to a genuine fitness-for-work issue, refusal can create employment complications, but the employer still needs to act fairly.

Does an employer need the employee's consent?

In most cases, yes. The employee should know why the examination is being requested, what information will be collected, and how it will be used. Consent is especially important because health information is sensitive personal information.

Can an employer withdraw a job offer because of the medical result?

Potentially, but only where the result genuinely shows the person cannot safely or effectively perform the role's inherent requirements, even after considering any appropriate adjustments. A decision based on irrelevant health information or assumptions can create legal risk.

Who should pay for a medical examination for employment?

If the employer requires the examination, the employer should generally expect to pay. This should be made clear in the offer, contract, or correspondence before the appointment is arranged.

Key Takeaways

• A medical examination for employment is usually only lawful where it is relevant, reasonable, and tied to the actual requirements of the role.
• Pre-employment checks should be role-specific, not broad health screening exercises.
• During employment, employers need a genuine reason, a fair process, and clear communication before requiring a medical assessment.
• Privacy matters. Collect only the health information you actually need, keep it secure, and limit who can access it.
• Medical information should usually focus on fitness for work and practical restrictions, not unnecessary diagnosis detail.
• Discrimination risk can arise if a business relies on assumptions about illness or disability instead of evidence about job capacity.
• Clear employment agreement clauses, conditional offers, consent wording, and internal processes reduce disputes before you sign or make a decision.

If you want help with employment agreement clauses, privacy obligations, fitness for work processes, and discrimination risk, you can reach us on 0800 002 184 or team@sprintlaw.co.nz for a free, no-obligations chat.