Endometriosis at Work: Employer Obligations Under NZ Employment Law

Endometriosis is a common long-term health condition, and for many people it can involve chronic pain, fatigue, heavy bleeding, and unpredictable flare-ups.

As a small business owner, you might be thinking: what does that mean for me as an employer?

When endometriosis at work affects attendance, performance, or a team member’s ability to do certain tasks, you’re not just managing a roster issue - you’re also managing legal risk and workplace culture. Getting it right protects your business, supports your people, and reduces the chance of disputes.

Below, we’ll walk through the key legal obligations in New Zealand, plus practical steps you can take to handle endometriosis at work in a fair, compliant (and human) way.

Why Endometriosis At Work Is A Business Issue (Not Just A Personal One)

In a small business, one person being away or working at reduced capacity can have a real operational impact. But endometriosis at work tends to present in ways that are easy to misunderstand if you haven’t dealt with it before, such as:

• Unpredictable absences (flare-ups may not follow a pattern)
• Variable capacity (fine one day, struggling the next)
• Time-sensitive symptoms (needing breaks urgently, needing to leave early)
• Medical appointments (specialist visits can be frequent)
• Privacy sensitivities (some staff won’t want details shared)

If the workplace response is dismissive (“just take a Panadol”), overly sceptical (“prove it”), or heavy-handed (“you’re unreliable”), it can quickly become a legal issue involving discrimination, unjustified disadvantage, or an unjustified dismissal claim.

The better approach is to treat endometriosis at work like any other health-related workplace issue: focus on what the role requires, what support is workable in your business, and what process you follow before making decisions that affect someone’s job.

Your Core Legal Duties Under NZ Law

There’s no single “endometriosis law” in New Zealand. Your obligations come from a few key legal areas that work together.

1) Health And Safety Duties (PCBU Obligations)

Under the Health and Safety at Work Act 2015, you have a primary duty (as a PCBU) to ensure, so far as is reasonably practicable, the health and safety of workers while they’re at work.

That can include psychosocial risks (like stress from a hostile response to a health condition) and physical risks (like a worker being required to perform tasks that aggravate symptoms, where there are safer alternatives).

In practice, that “reasonably practicable” lens often means:

• considering practical changes that reduce pain triggers (where feasible)
• ensuring access to breaks and facilities
• checking whether the role has inherent requirements that must still be met
• consulting with the worker about what’s workable

This overlaps heavily with good management. But it’s also a compliance issue - especially if the workplace is dismissive or creates unnecessary risk.

2) Good Faith And Fair Process

Under the Employment Relations Act 2000, you and your employee must deal with each other in good faith. For employers, this often means:

• communicating openly (without ambush meetings)
• not making assumptions about capability
• giving a genuine opportunity to respond before decisions are made
• using a fair process if performance or attendance becomes an issue

Even if a role is genuinely hard to perform with endometriosis symptoms, jumping straight to disciplinary steps (or exit conversations) without exploring options is where businesses often get into trouble.

3) Discrimination Risk (And What “Disability” Can Mean)

The Human Rights Act 1993 prohibits discrimination on various grounds, including disability. “Disability” can be broader than many employers realise and may include physical illness.

Endometriosis may be treated as a disability in some contexts, particularly where it substantially impacts day-to-day functioning or work capacity.

What this means for you is practical:

• don’t treat someone unfavourably because of their condition
• avoid applying rigid “one size fits all” standards without considering whether some flexibility is workable
• be careful that policies are not indirectly discriminatory (e.g. rigid attendance triggers without room for medical variability)

It also means you should be cautious in interviews and onboarding. Questions about family planning, periods, or health conditions can become problematic quickly - illegal interview questions is a common trap area for small businesses trying to “plan ahead”.

4) Get The Basics Right In Your Contract And Policies

Many endometriosis at work issues become messy because expectations aren’t clear from day one.

Having a properly drafted Employment Contract helps you set out hours, duties, leave processes, and what happens when someone can’t attend work - without you needing to “make it up” in the moment.

Practical Workplace Adjustments That Are Usually Worth Considering

There’s no universal checklist for endometriosis at work - the right adjustments depend on the role, the business size, and the person’s symptoms.

That said, there are common, low-cost changes that can make a big difference and also demonstrate that you acted reasonably.

Common Workplace Adjustments (Role-Dependent)

• Flexible start/finish times (especially during flare-ups)
• Hybrid work or work from home where the role allows
• Extra or longer breaks (including access to bathrooms without scrutiny)
• Temporary task modification (e.g. reducing heavy lifting, prolonged standing, or high-intensity physical duties)
• Heat packs / rest areas where safe and practical
• Shift swaps or a larger pool of trained staff (operational resilience)
• Clear process for calling in unwell (so it’s not a stressful negotiation each time)

Document The Process (Without Over-Lawyering It)

You generally want a simple paper trail showing:

• the employee raised a health-related concern (or you noticed an issue and raised it sensitively)
• you discussed what support might help
• you considered options and agreed on a plan (even if temporary)
• you reviewed it after a set period

This kind of documentation is useful if there’s later a disagreement about what was offered and whether you acted fairly.

One important reminder: “reasonable” does not necessarily mean “everything the employee asks for.” It’s about what is workable in your business without unjustifiable disruption - but you should still genuinely consider options rather than dismissing them.

Leave, Flexibility And Pay: What You Can (And Can’t) Do

When endometriosis at work causes someone to take time off or reduce hours, it’s tempting for employers to focus only on the immediate operational problem. But the legal framing matters: what type of leave is it, what evidence can you request, and what flexibility options exist?

Sick Leave And Medical Evidence

In New Zealand, employees are generally entitled to sick leave if they meet the statutory eligibility requirements. Endometriosis flare-ups can be a genuine basis for sick leave.

As an employer, you can request medical evidence in some situations (for example, if someone is away for 3+ consecutive calendar days, or earlier if you agree to cover the cost). The key is to apply your approach consistently and not in a way that targets one person because you don’t “believe” their condition.

Mental Health Impact And Wellbeing Days

Endometriosis isn’t only physical. Chronic pain can have a real mental health impact. Sometimes a worker may ask for time off due to stress, anxiety, or burnout linked to their condition.

From a business perspective, it’s still a health-related absence that should be handled carefully and consistently. mental health day off work scenarios are increasingly common, and it’s worth ensuring your managers know how to respond appropriately.

Flexible Work And Adjusted Hours

Sometimes the most sustainable approach to endometriosis at work is a change to hours or working pattern (temporarily or permanently).

If you’re considering reducing someone’s hours, be careful: you generally can’t unilaterally cut contractual hours without agreement and a proper process. If you’re exploring options, it helps to understand the risks around reducing staff hours so you don’t accidentally create an unjustified disadvantage situation.

Time Off In Lieu And Overtime Practices

Some employees try to “push through” during good weeks and then need extra recovery time during flare-ups. Depending on your workplace and role type, you might consider flexible arrangements like time off in lieu (TOIL) where it’s appropriate and properly documented.

If TOIL is part of your approach, make sure it’s handled consistently and in line with your employment documentation - time off in lieu arrangements can cause disputes if they’re informal or inconsistently applied.

Managing Performance, Attendance And Conversations The Right Way

This is where most of the legal risk sits.

Endometriosis at work can affect productivity, punctuality, and reliability - and as a business owner you do still need work done. The goal isn’t to ignore performance issues. It’s to handle them using a fair process, with appropriate support, and without discriminating.

Don’t Skip Straight To Discipline

If someone’s performance has dipped or absences have increased, it’s usually best to start with a health-and-support conversation rather than a disciplinary meeting.

Practically, that can look like:

• explaining the business impact in a calm, factual way
• asking if there’s an underlying health issue affecting work
• asking what supports might help them meet expectations
• considering medical input if needed (and with consent)
• setting a review date and checking in

This approach is often faster and more effective than going down a formal pathway too early - and it shows you acted reasonably if the issue later escalates.

Focus On “Inherent Requirements” Of The Role

A useful concept in these situations is the inherent requirements of the role - meaning the fundamental duties that must be performed (with practical adjustments where possible).

For example:

• If the role is customer-facing retail, attendance during rostered shifts may be an inherent requirement.
• If the role is desk-based admin, the inherent requirements may be met with flexible hours or remote work.
• If the role involves heavy physical work, you may need to assess whether temporary duty changes are possible without creating safety issues.

Being clear about what is truly essential helps you avoid drifting into vague or subjective judgments like “not a team player” - which are hard to defend and often feel unfair to employees.

Medical Information And Privacy: Handle With Care

Endometriosis is sensitive medical information. If an employee discloses it, you should treat it as confidential and only collect/use what you genuinely need for employment purposes.

Under the Privacy Act 2020, you should only collect personal information that’s necessary, store it securely, and avoid disclosing it unnecessarily (including to other team members).

In practical terms:

• avoid asking for detailed diagnosis information unless it’s relevant
• ask for functional information (“what adjustments help?”) rather than personal details
• keep records secure and access limited
• don’t “explain” an employee’s condition to the team as a reason for roster changes without their consent

Many businesses formalise expectations around this in an Employee Privacy Handbook, especially if multiple managers handle sensitive staff information.

Train Your Frontline Managers (This Is Where Things Go Wrong)

Even if you, as the owner, understand what you need to do, problems often start when a supervisor:

• makes jokes or dismissive comments about period pain
• pressures the employee to disclose more details than necessary
• treats them as unreliable without exploring options
• shares the information with the team

A quick manager briefing on how to handle endometriosis at work (confidentially, respectfully, and consistently) can prevent months of stress and potential claims.

Key Takeaways

• Endometriosis at work can create real operational challenges for small businesses, but it also engages employment law, health and safety obligations, privacy requirements, and discrimination risk.
• Under the Health and Safety at Work Act 2015, you must take reasonably practicable steps to keep workers safe, which can include considering practical workplace adjustments and avoiding unnecessary psychosocial harm.
• Under the Employment Relations Act 2000, you should act in good faith and follow a fair process before making decisions that affect someone’s job (especially where health is involved).
• Be mindful of discrimination risk under the Human Rights Act 1993 - endometriosis may fall within “disability” in some contexts, and rigid policies can create indirect discrimination issues.
• Workplace adjustments are often practical and low-cost (flexible hours, breaks, temporary task changes), but they should be discussed, agreed, and reviewed rather than assumed.
• Don’t treat sensitive health information casually - keep medical disclosures confidential and only collect what you genuinely need under the Privacy Act 2020.
• Where performance or attendance is impacted, start with a supportive, structured conversation and focus on the inherent requirements of the role before escalating matters.

If you’d like help reviewing your employment documents, managing a sensitive workplace situation, or putting the right policies in place, you can reach us at 0800 002 184 or team@sprintlaw.co.nz for a free, no-obligations chat.