Restraint Of Trade Meaning In New Zealand: What Employers Need To Know

If you employ staff, engage contractors, or you’re buying/selling a business, you’ll probably come across restraint clauses sooner than you’d like.

They often show up as a short paragraph in an employment agreement or sale contract, but they can carry big commercial consequences if they’re drafted poorly (or enforced the wrong way).

In this guide, we’ll break down what a restraint of trade means in a practical New Zealand context, what makes a restraint more likely to be enforceable, and how you can use them sensibly to protect your business without creating unnecessary risk.

This article is general information only and does not constitute legal advice. Restraints are highly fact-specific, so it’s worth getting advice on your particular situation.

What Does “Restraint Of Trade” Mean In New Zealand?

In simple terms, a restraint of trade is a contractual promise that limits what someone can do after a business relationship ends.

For small businesses, restraints usually appear when:

• an employee leaves your business
• a contractor finishes a project and moves on
• a co-founder exits
• you sell your business (and the seller is restricted from competing)
• you buy a business and want to protect what you’ve paid for (goodwill, customers, processes)

A restraint of trade clause might restrict a person from:

• competing with you (e.g. starting a similar business)
• soliciting your customers/clients
• poaching your staff
• dealing with certain suppliers or business partners

From an employer’s point of view, the goal isn’t to “punish” someone for leaving. It’s to protect legitimate business interests such as customer relationships, confidential information, pricing, and key staff stability.

That said, restraints aren’t automatically enforceable just because they’re written in a contract. In New Zealand, restraints are generally only enforceable to the extent they’re considered reasonable, genuinely necessary to protect your business, and appropriate for the particular context (for example, employment vs contractor arrangements vs a business sale).

When Do Employers And Businesses Actually Need A Restraint Clause?

Not every business needs restraints in every agreement. Overusing restraints can backfire: they can be challenged, they can harm employee relations, and they can distract you from more effective protections (like confidentiality clauses and good operational security).

Restraints are usually most useful when you can identify a real “risk point”, such as:

• Customer-facing roles where the employee has strong personal relationships with clients (sales, account management, senior service staff)
• Access to sensitive information like margins, pricing models, tender strategy, product roadmap, or supplier terms
• Senior roles where the person has influence over strategy and team structure
• Specialist skills + business systems where someone could replicate the offering quickly using your know-how
• Business sale transactions where the buyer has paid for goodwill and needs protection from the seller competing immediately

If you’re employing someone, it’s worth thinking about restraints as part of a bigger “legal foundations” package, alongside a properly drafted Employment Contract and clear confidentiality and IP ownership terms.

If you’re selling your business, restraints often sit inside (or alongside) a sale agreement, because the buyer will usually expect protection for the customer base they’re paying for. This often comes up in a Business Sale Agreement.

What Makes A Restraint Of Trade Enforceable In NZ?

This is where the real commercial risk sits. The legal test is not “did the person sign it?” It’s more like: is it fair and reasonably necessary to protect the business?

While enforceability depends on the facts (and the type of relationship involved), restraints are typically assessed around a few core ideas:

1) You Need A Legitimate Business Interest To Protect

A restraint is more likely to be enforceable where it protects something real, such as:

• trade secrets or confidential information
• customer connections and goodwill
• stability of your workforce (e.g. preventing a senior person from taking the whole team)

Wanting to “stop competition” in a general sense usually isn’t enough. Competition is part of business. The law is more comfortable with restraints when they’re targeted at protecting genuine assets of your business.

2) It Must Be Reasonable In Scope

Reasonableness is often where restraints fall over. Common issues include restraints that are too broad in:

• time (the duration of the restraint)
• geography (the area the restraint covers)
• activities (what the person is actually prohibited from doing)

For example, a restraint that stops an employee from working “in any business similar to ours anywhere in New Zealand for 24 months” is more likely to be challenged than a clause that restricts soliciting your existing customers for a short period in a defined region.

3) Seniority And Access Matter

Restraints are generally more defensible where the person:

• is senior
• had meaningful influence
• had access to sensitive commercial information
• could realistically cause harm by competing immediately

This is why a “one size fits all” restraint copied into every employee agreement often causes problems. A restraint that may be reasonable for a senior business development manager may be unreasonable for a junior staff member with minimal customer exposure.

4) How The Clause Is Drafted Really Matters

Even when you have a legitimate interest, a poorly drafted clause can become hard to enforce. Problems we commonly see include:

• undefined terms like “competitor” or “customer”
• no link between the restraint and the person’s actual role
• restraints that overlap and contradict each other
• restraints that unintentionally capture legitimate work (and therefore look unreasonable)

This is also why it’s risky to rely on generic templates. A restraint should reflect your business model (how you win and keep customers), not a generic description of “competition”.

It’s also worth knowing that New Zealand courts can, in some situations, enforce a restraint only to a reasonable extent (rather than all-or-nothing). That said, you generally shouldn’t rely on a court “fixing” an overbroad clause - it’s far better to draft it properly from the start.

Restraint Period Meaning: How Long Is A “Restraint Period” Supposed To Be?

The restraint period is simply the length of time the restraint operates after the relationship ends.

You might see it written as:

• “for a period of 3 months after termination”
• “for the restraint period” (defined elsewhere in the agreement)
• a “tiered” clause (e.g. 3 months / 6 months / 12 months alternatives)

There’s no universal “correct” restraint period. What’s reasonable depends on what you’re protecting and how quickly that value changes.

As a practical business lens, ask yourself:

• How long would it take you to introduce a new account manager to the client and stabilise the relationship?
• How quickly does your pricing become outdated?
• How long before a departing staff member’s influence or inside knowledge becomes less useful?

A few examples (purely illustrative) of when a longer restraint period might be argued as more reasonable:

• You operate on long sales cycles and multi-year contracts (e.g. enterprise services)
• The person was deeply involved in strategic planning or product development
• You’re purchasing goodwill in a business sale and need time to “bed in” the customer base

And when a shorter restraint period may be more appropriate:

• Customers buy quickly and shopping around is easy
• Information changes rapidly (e.g. pricing changes weekly)
• The person had limited customer contact

One more point: if you’re relying on restraints to cover what is really a confidentiality issue, it may be better to focus on confidentiality obligations and information handling processes. A restraint is not a substitute for good confidentiality terms and internal controls.

Common Types Of Restraints (And How They Work In Practice)

Restraints aren’t all the same. In many situations, a narrower restraint is easier to justify and can still do the job commercially.

Non-Compete Restraints

A non-compete prevents someone from working in or starting a competing business for the restraint period.

These can be harder to enforce (particularly in employment settings) because they directly restrict a person’s ability to earn a living. If you use a non-compete, it needs to be tightly drafted around:

• what counts as “competition” (products/services, market segment)
• where the restriction applies
• why you need it (what legitimate interest is being protected)

Non-Solicitation Of Customers

Non-solicitation restrains the person from approaching or enticing your customers away.

From a small business perspective, this is often the most commercially useful restraint because it directly protects customer relationships without completely blocking a person from working.

Key drafting points include defining:

• who counts as a “customer” (current only? past 6 months? prospects they dealt with?)
• what “solicit” means (direct approach, indirect, targeted ads, social media messages)

Non-Poaching Of Staff

This prevents someone from encouraging your employees/contractors to leave and join them.

This can be particularly relevant where a manager or team lead exits, because the real risk is not just losing one person, but losing a whole function.

Confidentiality (Not A Restraint, But Often The Real Solution)

Strictly speaking, confidentiality is not always classed as a restraint of trade, but in practice it’s part of the same risk-control toolkit.

If your key concern is protecting sensitive information, you may want to ensure your agreement includes clear confidentiality and IP terms, and (where relevant) a standalone Non-Disclosure Agreement.

For many small businesses, confidentiality obligations plus strong customer relationship management are often more effective than trying to rely on a broad non-compete.

How To Use Restraints To Protect Your Business (Without Overreaching)

Restraints work best when they’re part of a bigger strategy: good contracts, good systems, and good exit processes.

Here’s a practical checklist you can use.

1) Match The Restraint To The Role (Not Your Frustrations)

It’s understandable to want maximum protection. But if a restraint is too heavy-handed, you may end up with something unenforceable.

Instead, tailor restraints based on:

• seniority and pay level
• customer access
• access to confidential information
• how easy it would be for them to cause real harm by competing

2) Be Clear About What You’re Protecting

A restraint is easier to justify where it’s obvious what the business is protecting (e.g. customer relationships built at the company’s expense).

This is also where well-structured agreements help. For example, if you have shareholders or co-founders, a properly drafted Shareholders Agreement can address exit scenarios, confidential information, and competitive behaviour in a way that aligns with your business structure.

3) Use Reasonable “Layers” Of Protection

Often, a layered approach is more realistic than one broad restraint. For example:

• strong confidentiality obligations (ongoing)
• non-solicitation of customers (limited time)
• non-poaching of staff (limited time)
• a narrow non-compete only for very senior roles (limited time and area)

This can help demonstrate that you’re not trying to stop someone from working entirely - you’re protecting specific business assets.

4) Build Your “Enforceability Story” Early

If you ever need to enforce a restraint, you’ll want to show you’ve acted reasonably and consistently.

Practical steps include:

• limit access to sensitive information (don’t give everyone admin access “just because”)
• use role-based permissions and document controls
• keep client lists and pricing models clearly marked and treated as confidential
• use clear onboarding/offboarding processes (returning laptops, disabling logins, confirming deletion of data)

Also, make sure your contracts are up to date and consistent with your actual operations. If your business has changed, but your agreement hasn’t, restraints can become harder to justify.

5) Consider Your Business Structure And Ownership Documents

Sometimes restraints come up because a business didn’t set up the right ownership and governance documents from day one.

If you’re operating through a company, having a clear Company Constitution (and the right shareholder arrangements) can help prevent disputes about what happens when someone exits, sells down, or starts a competing venture.

And if you’re bringing in investors or key staff with equity, planning for competitive risk early is much easier than trying to fix it once someone is already halfway out the door.

Key Takeaways

• A restraint of trade is a contractual restriction that limits competition, solicitation, or related activities after a relationship ends, and it’s only enforceable in New Zealand to the extent it’s reasonable and protects a legitimate business interest (with the context - employment, contractor, or business sale - often making a big difference).
• A restraint should be tailored to the person’s role, seniority, customer access, and exposure to confidential information - “one size fits all” restraints are more likely to be challenged.
• The restraint period is the duration the restraint applies after termination, and it needs to match the commercial reality of how long your business needs protection.
• Narrower restraints (like non-solicitation and non-poaching) are often more practical for small businesses than broad non-compete clauses.
• Restraints work best when supported by strong contracts, confidentiality terms, and business systems that treat your customer relationships and sensitive information as real assets.
• Whether you’re hiring, restructuring, or selling, investing in properly drafted agreements early can save you expensive disputes later.

If you’d like help reviewing or drafting restraint clauses that actually fit your business, we’re happy to help. Contact Sprintlaw on 0800 002 184 or email team@sprintlaw.co.nz for a free, no-obligations chat.