Legal
Restraint of Trade — What to Check Before You Start
Before you register a company, before you tell anyone you are going out on your own, and before you approach a single potential client — read your employment contract. Find the restraint of trade clause. If you do not have a copy, request it from HR. You are entitled to it.
Most professionals leaving employment to start a business treat the restraint of trade as a technicality — an aggressive clause that looks worse than it is. Some clauses are exactly that: drafted broadly by an employer's attorneys with the expectation that most employees will not challenge them. But some are specific, reasonable, and enforceable — and an employer with a legitimate interest to protect will enforce them. The consequences of getting this wrong are severe: an urgent interdict obtained within days can stop your business before it has generated a single rand of revenue.
Understanding what restraints are, how courts evaluate them, and what specific risks you face from your particular clause is worth the cost of a single attorney consultation before you leave.
The Legal Framework: Presumptively Valid, Subject to Reasonableness
South African restraint of trade law was fundamentally changed by the Appellate Division's decision in Magna Alloys and Research (SA) (Pty) Ltd v Ellis (1984). Before that decision, restraints were treated as presumptively unenforceable. After it, they are presumptively valid and enforceable.
This shifts the burden to you. When an employer seeks to enforce a restraint, you bear the burden of proving that enforcement is unreasonable and contrary to public policy. The employer does not need to prove the restraint is reasonable — you need to prove it is not. This is a harder position than most departing employees expect.
The test for enforceability was structured by the Appellate Division in Basson v Chilwan (1993). Courts apply a sequential inquiry:
- Does the employer have a legitimate proprietary interest worthy of protection after employment ends?
- Is that interest threatened by the employee's conduct?
- If so, does the restraint — in its duration, geographic scope, and activity restrictions — go beyond what is reasonably necessary to protect that interest?
- Would enforcement, even if reasonable between the parties, be contrary to public policy?
Only if the answer to question 3 or 4 is yes will the court decline to enforce the restraint.
What Courts Treat as a Protectable Interest
Not everything an employer wants to protect qualifies as a legitimate proprietary interest. The courts have been specific about this distinction, and it is the most important factual question in any restraint dispute.
What is protectable:
Confidential information and trade secrets. Pricing strategies, client rate cards, proprietary methodologies, product formulations, software source code, strategic business plans — information that is genuinely proprietary, not publicly available, and gives the business a competitive advantage. The courts have accepted that an employer need not prove actual misuse of confidential information. In Reddy v Siemens Telecommunications, the court held that the risk that confidential information may be used is sufficient to justify a restraint, even without proof that it has been.
Client relationships and customer connections. Where an employee has developed close personal relationships with specific clients — relationships that the client is likely to transfer to the employee on departure — those relationships are a protectable interest of the employer. The key question is how strong the connection is between the individual employee and the client, and whether the client is likely to follow the individual rather than stay with the business. An account manager who has managed 20 client accounts for three years and is the primary contact for each creates a risk that those clients follow them on departure. A junior analyst who has never met a client does not.
Proprietary systems and processes. Unique operational systems, software, or processes that the employer has invested in developing and that are genuinely not available in the market.
What is not protectable:
General industry knowledge and skill. The courts have consistently held that general expertise, skills, and knowledge acquired through employment are not proprietary to the employer. In Automotive Tooling Systems v Wilkens, the court confirmed that an employer cannot "own" an employee's general skill and experience. A marketer who has become skilled at digital marketing through their employment does not take the employer's protectable interest when they leave — they take their own enhanced skill.
Public domain information. Information that is freely available, industry standard, or readily discoverable is not confidential and cannot be protected by a restraint.
The desire to avoid competition. A restraint designed purely to suppress competition — not to protect a specific interest — is not enforceable. The employer must be able to identify specifically what is being protected.
The practical implication: before assuming a restraint will be enforced, identify whether your employer has a protectable interest specifically applicable to you. A broad restraint clause in the contract of a junior employee with no client contact and no access to confidential information is much more vulnerable to challenge than the same clause applied to a senior sales director with direct client relationships and access to pricing databases.
The Reasonableness Assessment: Duration, Geography, and Scope
Even where a protectable interest exists, the restraint must be proportionate to the interest being protected. Courts assess three dimensions:
Duration
Six to twelve months is the range courts routinely accept for employee restraints without requiring particularly strong justification. A one-year restraint for a senior employee with significant client relationships and access to confidential information will typically be enforced.
Two years is the outer boundary that courts have accepted — but only where the employer can provide convincing evidence that the longer period is necessary. In Sadan v Workforce Staffing (2023), the Labour Appeal Court reduced a two-year restraint to one year because the employer could not adequately justify the longer period. In Beedle v Slo-Jo Innovations Hub (2023), the same court upheld a two-year restraint covering the whole of South Africa where the employer led sufficient evidence of the business interest requiring protection over that period.
Restraints longer than two years are routinely challenged. The longer the duration, the stronger the employer's evidence must be to justify it.
Important: courts can partially enforce. If a two-year restraint is found to be excessive, the court may not strike it out entirely — it may enforce it for one year instead. Partial enforcement is a well-established practice in South African restraint law. Do not assume that because your clause looks excessive in duration it will be fully unenforceable.
Geographic Scope
The geographic area of the restraint must be proportionate to the employer's actual business footprint and the employee's role within it.
A Cape Town-based business cannot justify a restraint covering the whole of South Africa for an employee who only operated in the Western Cape. A national business with operations across South Africa has a stronger basis for a national restraint for a senior employee with national client relationships.
Courts have enforced both very broad and very narrow geographic restraints depending on the facts. Again, partial enforcement applies — a restraint covering "South Africa, Africa, and the world" may be enforced only within the geographic area that is actually proportionate.
Scope of Restricted Activities
The restraint must be limited to activities that genuinely threaten the employer's protectable interest. A non-compete clause that prevents you from working in any role at any competitor — regardless of whether the role involves confidential information or client contact — is more vulnerable than one that specifically prevents you from doing the same work in the same market.
A clause that prevents you from working "in the marketing industry anywhere in South Africa for two years" is broader than one that prevents you from "providing digital marketing services to clients in the FMCG sector in Gauteng for twelve months." The first is more vulnerable to challenge. The second is more likely to be enforced if the employer has an identifiable interest in that specific market.
The Three Types of Clause to Look For
Non-Compete
Prevents you from working for a competitor or starting a competing business for the defined period. The scope of "competitor" matters enormously — is it defined narrowly (same specific service offering) or broadly (any business in the same industry)? A clause that defines "competitor" as any business providing services in a broad sector will be harder for the employer to enforce in full than one that defines it narrowly.
Non-Solicitation of Clients
Prevents you from approaching or accepting work from former clients. This is typically the most clearly justifiable restraint — the employer's client relationships are an obvious protectable interest. Non-solicitation clauses are routinely enforced for reasonable periods.
The distinction between approaching a client (prohibited) and responding to a client who proactively contacts you (arguably not prohibited) is a question of fact that courts consider. Having a client seek you out after your departure, without solicitation, may not breach a non-solicitation clause — but the evidence of who initiated the contact matters.
Non-Solicitation of Employees
Prevents you from recruiting former colleagues. This protects the employer's investment in its workforce. Non-solicitation of employees is typically enforced for the duration of the restraint period.
Confidentiality: Separate From and Longer Than the Restraint
Confidentiality obligations in your employment contract are legally and practically separate from the restraint of trade. Critically, confidentiality obligations have no time limit. You cannot use your former employer's confidential information in your new business even after the restraint period expires.
Confidential information includes: client lists and pricing structures, proprietary methodologies and processes, financial information, business strategies and plans, and any information that the employer treats as confidential and that is not publicly available.
The clean-room approach: when starting a new business after leaving employment, avoid using any document, file, or piece of information that belongs to your former employer. Do not copy client lists, price lists, or internal documents before leaving. Do not use your former employer's email templates, presentation formats, or methodologies directly. Build everything independently from the start.
An employer who discovers that a former employee used their client database, copied internal pricing information, or used their confidetary methodology can pursue both the restraint breach and an independent confidentiality claim — potentially even after the restraint period has expired. The confidentiality claim is not time-limited by the restraint period.
The December 2025 Lucchini Judgment: During-Employment Restrictions
A significant December 2025 Labour Court judgment — Lucchini South Africa (Pty) Ltd v CCMA and Vishen Mahabeer — clarified an important boundary. The court held that contractual clauses preventing an employee from seeking alternative employment while still employed are unenforceable as contrary to public policy.
The judgment articulates that section 22 of the Constitution (the right to choose one's trade, occupation, or profession freely) protects employees from blanket prohibitions on exploring alternative work during the employment relationship. An employer cannot prevent an employee from going to job interviews or speaking to competitors while still employed.
This is distinct from and does not affect the enforceability of post-employment restraints. A clause that says "you cannot work for a competitor for 12 months after leaving" is post-employment and remains enforceable if reasonable. A clause that says "you cannot work for a competitor while employed here" is a during-employment restriction and is now clearly unenforceable following Lucchini.
The Employer's Remedy: Urgent Interdict
When an employer believes a restraint has been breached, the primary remedy is an urgent interdict — an emergency court order prohibiting you from continuing the prohibited activity. Interdict applications are heard rapidly, sometimes within days of filing.
An employer applying for an urgent interdict must demonstrate: a clear right (the restraint clause), an injury complained of or reasonably apprehended (the breach), and the absence of an adequate alternative remedy.
If granted, an interdict can stop your business from operating, prevent you from contacting clients, and prohibit you from continuing in the role you have taken on — while the substantive litigation continues, which can take months. The business damage from even a temporary interdict can be severe: lost client opportunities, reputational harm, and cost of opposing legal proceedings.
In practice, the employer does not need to prove that you will definitely breach the restraint to get an interdict — the risk that confidential information may be misused or clients approached is often sufficient.
Practical Strategies Before You Leave
Step 1: Get and Read Your Contract
Before resigning, get a copy of your employment contract and read the restraint provisions carefully. Note: the duration, the geographic scope, the definition of "competitor," and the specific activities prohibited.
Step 2: Assess Your Personal Risk
Work through the Basson v Chilwan analysis from your own position:
- Does your employer have a specific protectable interest as it applies to you — your client relationships, your access to confidential pricing or strategy, your knowledge of proprietary systems?
- How strong is your client connection? Are there clients who would follow you personally?
- What specific information do you have that your employer would regard as confidential?
The more clearly you can identify that no protectable interest applies to your specific role, the stronger your position.
Step 3: Get an Attorney Review Before Resignation
Have an employment attorney review your contract before you resign — not after. A once-off consultation costs R2 000 to R5 000. The attorney can assess the enforceability of your specific clause, advise on what you can and cannot do during and after the notice period, and flag any particular risk areas.
This consultation is the most valuable step you can take before starting your business.
Step 4: Structure Your Departure to Minimise Risk
Do not copy, take, or retain any employer documents, files, or client data before leaving. Return all employer property. If you receive contact from former clients after leaving, document that they contacted you rather than the reverse. Be able to demonstrate, if challenged, that you built your new client base independently.
If you are joining a competitor rather than starting your own business, disclose your restraint to the new employer before accepting the offer. Many employers will structure your role to avoid triggering the restraint — placing you in a different division or on different accounts for the restraint period.
Step 5: Consider Negotiating the Restraint
If your restraint is unreasonably broad — duration exceeding 18 months, geographic scope covering areas you have never worked in, activities defined more broadly than your actual role — negotiate it before signing the contract or before leaving. An employer may agree to narrow the restraint in exchange for an orderly exit, particularly if you are a valuable employee whose cooperation in the handover process the employer values.
What Weakens an Employer's Enforcement Position
Certain conduct by the employer can undermine their ability to enforce a restraint even if it would otherwise be enforceable:
Delayed action. An employer who discovers a breach and waits months before applying for an interdict weakens their urgency claim. Prompt action is important for a successful interdict application.
Employer's own breach. If the employer has failed to meet their obligations under the employment contract — wrongful dismissal, non-payment of benefits, breach of other terms — this may provide a defence to the restraint claim.
Changed role. A restraint signed at the time of initial employment may not be appropriate for a significantly more senior role assumed years later without a new restraint agreement being signed. An employer enforcing a restraint against someone in a materially different role from when the restraint was signed faces a stronger reasonableness challenge.
No actual protectable interest. If the employer cannot identify specific confidential information or client relationships that are genuinely at risk, the restraint lacks a foundation.
Common Mistakes Worth Avoiding
Assuming a broad or long restraint clause is automatically unenforceable. Courts enforce well-evidenced restraints regularly, even long ones. Partial enforcement means the court may enforce a narrowed version of a broad clause rather than striking it out.
Approaching former clients before the restraint period expires. This is the most common triggering event for enforcement proceedings. Even one email to a former client can be enough for an interdict application.
Taking employer documents, files, or client data. This strengthens the employer's case significantly and creates a separate confidentiality claim that is not limited by the restraint period.
Not disclosing a restraint to a new employer. A new employer who hires you in breach of your restraint can be joined to the interdict application. Disclose the restraint and let the new employer structure your role accordingly.
Starting a business without getting legal advice. The cost of a single pre-departure employment attorney consultation is a fraction of the cost of defending interdict proceedings.
This article provides general information about restraint of trade clauses under South African law. Enforceability is highly fact-specific and depends on the exact wording of the clause, the employee's specific role, and the employer's particular interests. Consult a qualified employment attorney before leaving employment or taking any action that may breach a restraint. Nothing in this article constitutes legal advice.
Professional advice recommended
This topic involves legal, tax, or regulatory complexity that varies by individual circumstances. The information here is general guidance only. Consult a qualified professional before making decisions specific to your situation.
This article provides general information about South African business law and regulation. It is not legal, tax, or financial advice. Laws and regulations change — verify current requirements with a qualified professional or directly with the relevant authority before making decisions.