Medical Examinations in Employment: A Guide for New Zealand Employers

Asking a candidate or employee to attend a medical examination for employment can feel like a sensible risk-management step, especially where safety, fitness for work, or extended sick leave is involved. But this is where employers often get caught. Common mistakes include requiring a medical check when the role does not genuinely justify it, asking for far more health information than you need, or relying on a broad consent form without thinking about privacy and discrimination risks. Another frequent problem is making decisions based on assumptions about a person’s condition rather than their actual ability to do the job.

New Zealand employers can use pre-employment and ongoing medical assessments in some situations, but only if the request is lawful, relevant, and handled carefully. The right approach depends on the role, the employment agreement, workplace health and safety duties, and your obligations under privacy and human rights laws. This guide explains when a medical examination may be appropriate, what you should put in your contracts and policies, and how to avoid turning a legitimate workplace concern into a legal problem.

Overview

A medical examination for employment is not a routine box to tick. An employer should only request one where it is reasonably connected to the role or a genuine workplace issue, and the process should be limited to information that is necessary for a proper employment purpose.

For New Zealand businesses, the key legal questions are whether the examination is justified, whether the worker has been told clearly what is being requested and why, and whether the resulting information is collected, used, and stored lawfully.

• Check whether the role has genuine inherent requirements that make medical fitness relevant.
• Make sure your employment agreement or workplace policy covers health assessments in clear terms.
• Limit questions and reports to what is reasonably necessary for the job or issue at hand.
• Get informed consent before collecting health information or contacting a treating doctor.
• Consider privacy, confidentiality, and who will be allowed to see the report.
• Avoid discrimination by focusing on ability to perform the role, not assumptions about illness or disability.
• Give the employee a fair process before acting on any medical opinion.
• Record why the assessment was needed and how you made your decision.

What Medical Examination for Employment Means For New Zealand Businesses

A medical examination for employment can be lawful in New Zealand, but only where the employer has a real and defensible reason for requesting it.

In practice, this usually comes up at three points in the employment relationship. First, before you hire someone into a role with genuine physical or psychological demands. Second, during employment where there is a legitimate question about fitness for work. Third, where an employee is returning after illness or injury and you need current medical information before they resume duties.

Pre-employment medical examinations

Pre-employment medical checks are most defensible where the role has inherent requirements that matter to safety or core job performance. A forklift operator, commercial driver, worker handling hazardous substances, or someone in a physically demanding role may need to meet certain health standards. In those cases, a targeted medical examination for employment may help confirm whether the person can safely perform the role.

The main point is relevance. You should not ask every applicant for a full medical simply because it feels safer. Before you sign an employment agreement or make an offer conditional on medical clearance, ask whether the information is genuinely necessary for that particular role.

If you use a pre-employment medical, keep it tailored. A role-specific assessment is usually more appropriate than a broad fishing exercise into an applicant’s health history.

Medical examinations during employment

An employer may also need a medical assessment during employment where there is a real concern about capacity, safety, or the employee’s ability to carry out their duties.

This can arise where:

• the employee has been on extended sick leave and the likely return date or restrictions are unclear
• there are credible concerns that the employee may not be fit to safely perform key tasks
• the employee’s health appears to be affecting performance in a way that needs medical clarification
• the role involves safety-sensitive work and current fitness is reasonably in doubt

Even then, the request should be proportionate. You are usually entitled to seek information about fitness for work, restrictions, likely duration, and accommodations that may assist. You are not automatically entitled to the employee’s full diagnosis, complete medical history, or unrelated personal health details.

Return to work assessments

Return to work medical checks can be appropriate where you need to know whether the employee can safely resume their duties and whether any adjustments are needed.

For example, if a warehouse employee has had surgery, you may need confirmation about lifting limits, restricted duties, and when those restrictions will be reviewed. If an office employee has experienced stress-related leave, the more relevant questions may be around hours, workload, support measures, and any practical conditions for return.

The focus should stay on capacity and workplace management, not curiosity about the employee’s private circumstances.

The wider legal framework

Several legal duties sit behind any medical examination for employment in New Zealand.

Your duties as an employer include:

• acting in good faith in your dealings with employees and prospective employees
• meeting health and safety obligations so far as reasonably practicable
• complying with privacy obligations when collecting and handling health information
• avoiding unlawful discrimination, including discrimination linked to disability
• following a fair process before making decisions that affect employment

These duties work together. A business might have a genuine safety concern, but still mishandle the process by collecting excessive information or failing to consult with the employee. Equally, an employer may have a privacy-compliant form but no valid basis for requiring the examination in the first place.

Legal Issues To Check Before You Sign

The safest time to deal with medical examination issues is before you sign the employment agreement or before you accept the provider's standard terms for occupational health services.

Does the role justify a medical examination?

The first question is whether the role itself creates a lawful reason to seek medical information. This often comes down to the inherent requirements of the job.

Think about:

• whether the role is safety-sensitive
• whether the person must meet physical, sensory, or psychological requirements to perform core duties
• whether a medical condition could create a serious and immediate workplace risk
• whether the same objective could be met through a narrower assessment, such as a task-based functional test

If the answer is weak or speculative, requiring a medical examination may be hard to justify.

What should go into the employment agreement?

Your employment agreement should support any medical examination process you may need later. A vague statement that employees must be medically fit is usually not enough on its own.

A well-drafted agreement may cover:

• when the employer may require evidence of fitness for work
• whether a pre-employment medical is a condition of the offer
• the employee’s obligation to provide relevant medical certificates where absent from work
• when the employer may request an independent medical assessment, if reasonable
• who pays for employer-required assessments
• how medical information will be handled confidentially
• the employee’s obligation to disclose restrictions that affect safe performance of the role, where relevant and lawful

The clause should still be used reasonably. A contract term does not give you unlimited power to demand health information whenever you like.

Do you need consent?

Yes, in practice consent is central when collecting health information or seeking a report from a doctor or occupational assessor.

The consent should be specific and informed. The employee or applicant should know:

• who will carry out the examination
• what type of information is being requested
• why it is needed
• who will receive the report
• how the information will be used

Broad authorisations that allow open-ended release of medical records create risk. A focused consent for a defined purpose is usually safer.

How much information can you ask for?

You should ask for the minimum information reasonably necessary for the employment decision or workplace issue you are addressing.

Often, the useful questions are functional rather than diagnostic. For example:

• Is the employee fit to perform the inherent requirements of the role?
• Are there temporary or permanent restrictions?
• What duties should be modified, if any?
• Is a phased return to work recommended?
• When should the position be reviewed again?

This is generally more appropriate than asking for every detail of the person’s medical condition.

Who pays for the examination?

If the employer requires the medical examination for employment, the employer will often be expected to pay for it. This is particularly likely where the assessment is requested for the employer’s own decision-making or risk management purposes.

Cost should be clear before you sign with an occupational health provider or direct the worker to attend. If there are travel, specialist, or follow-up costs, make that plain early.

What about privacy and records?

Health information is sensitive personal information. You need a clear internal process for collecting, storing, using, and disclosing it, including a privacy notice for staff where appropriate.

Your process should cover:

• who in the business can access medical reports
• where the records are stored
• how long they are kept
• how they are separated from general personnel files where appropriate
• what happens if the employee requests access to the information

Before you rely on a verbal promise from a manager that the information will stay private, put the process in writing. This is especially important in small businesses where health details can spread informally.

How do discrimination risks arise?

The main risk is making decisions based on a person’s condition itself rather than their actual ability to do the job, with reasonable adjustments where appropriate.

For example, rejecting an applicant because they disclose a medical history, without assessing whether they can perform the role safely and effectively, may create serious issues. The better approach is to assess the role requirements, the medical advice, and whether adjustments are reasonable in the circumstances.

Should you use your own doctor or an independent examiner?

Where a dispute or serious concern exists, an independent medical examiner is often more reliable than relying only on informal notes or assumptions.

The scope of the referral matters. Give the examiner a neutral, job-focused brief. Provide the position description, identify the actual concerns, and ask questions tied to work capacity. Avoid leading questions that push for a preferred outcome.

Common Mistakes With Medical Examination for Employment

Most employer problems in this area come from process errors, not from the idea of seeking medical information itself.

Using a standard form for every role

A blanket pre-employment medical process for all staff is often hard to defend. A receptionist, software developer, and site labourer do not present the same workplace risks or role requirements.

If you use the same form and same level of health scrutiny for every hire, you increase the chance of collecting unnecessary information and creating discrimination concerns.

Asking for diagnosis when you only need work capacity

Employers often ask, “What condition does the employee have?” when the real business question is, “What can this person safely do, and what support or restrictions apply?”

That difference matters. A capacity-based approach is more relevant, more respectful of privacy, and often legally safer.

Skipping consultation with the employee

An employee should not be sent for an examination without a clear explanation of why it is being requested and how the information will be used.

Good faith matters here. If you are concerned about fitness for work, explain the concern, invite the employee’s response, and give them a reasonable opportunity to engage before making decisions.

Treating medical advice as automatic grounds for dismissal

A medical report rarely answers the full employment question on its own. Even where the report raises concerns, you usually still need to consider alternatives before taking action.

That may include:

• temporary adjustments to duties
• a graduated return to work
• redeployment options within the business, if realistic
• further medical clarification where the report is unclear
• consultation with the employee about practical next steps

This is where founders often get caught. They receive a medical report, assume the outcome is obvious, and move too fast.

Over-sharing medical information internally

Managers sometimes tell payroll, supervisors, or co-workers more than is necessary. That creates privacy risk and can damage trust.

Usually, only those who need to know about restrictions or adjustments should be told, and even then only the minimum necessary information should be shared.

Ignoring inconsistent or outdated reports

If the information you have is old, incomplete, or internally inconsistent, pause before you act. A vague certificate saying someone is “unfit” may not answer what duties they can do, for how long, or whether modifications would help.

It is often better to ask sensible follow-up questions than to guess.

Failing to document the reason for the examination

If your decision is later questioned, you will want a clear record showing why the assessment was necessary and how the scope was limited.

Keep notes of:

• the workplace concern or role requirement that triggered the request
• what was explained to the employee or applicant
• what consent was obtained
• what information was requested from the examiner
• how the final employment decision was reached

Good records help show that your process was measured and fair.

Example, a practical founder scenario

A small logistics business hires a delivery driver and includes a clause making the offer subject to a role-specific medical examination. The assessment is limited to vision, fitness to drive, lifting capacity, and any restrictions relevant to road safety. The employer pays for the examination, gives the applicant a clear consent form, and receives a short report stating whether the applicant can perform the role safely, with any restrictions noted.

That process is much safer than asking the applicant to provide unrestricted access to all medical records or using a broad questionnaire that covers unrelated conditions.

Now compare that with an office-based start-up asking every new hire for a general medical check “just in case”. Without a role-based justification, that approach is much harder to defend.

FAQs

Can I require a pre-employment medical for every new hire?

Usually not. You should only require a pre-employment medical where it is genuinely relevant to the role and its inherent requirements, especially for safety-sensitive or physically demanding work.

Can I ask an employee for their diagnosis?

Sometimes, but often you do not need it. In many cases, the better question is whether the employee is fit for work, what restrictions apply, and what adjustments may be needed.

Do I need the employee’s consent before contacting their doctor?

Yes, you should obtain clear and informed consent before seeking medical information from a treating doctor or specialist.

Who should pay for an employer-required medical examination?

If the employer requires the examination for employment purposes, the employer will commonly pay for it. Make this clear in advance.

Can I dismiss someone if a medical report says they are unfit?

Not automatically. You should still follow a fair process, consider the actual report carefully, consult with the employee, and assess whether adjustments or alternative arrangements are reasonable before making a final decision.

Key Takeaways

• A medical examination for employment should only be used where it is relevant, necessary, and connected to the role or a genuine workplace concern.
• Pre-employment, during-employment, and return-to-work assessments each need a clear purpose and a tailored scope.
• Your employment agreements and workplace policies should address fitness for work, medical evidence, confidentiality, and who pays for employer-required assessments.
• Collect only the health information you reasonably need, and focus on work capacity rather than broad medical history wherever possible.
• Get informed consent before obtaining reports, especially if you are contacting a treating doctor or using an independent examiner.
• Handle medical information carefully under privacy obligations and limit internal access to those who genuinely need it.
• Avoid discrimination by assessing the person’s ability to do the job and considering reasonable adjustments where appropriate.
• Use a fair process before making decisions that affect employment, and keep clear records of why the examination was requested and how the outcome was used.

If you want help with employment agreement clauses, privacy processes, independent medical assessment requests, workplace fitness for duty issues, or a contract review, you can reach us on 0800 002 184 or team@sprintlaw.co.nz for a free, no-obligations chat.