Restraint of trade clauses are often treated as standard wording in an employment contract. They are signed at the beginning of the employment relationship, when the focus is usually on the role, salary, benefits and start date. For many employees, the restraint clause is only properly considered much later, when they resign, are dismissed, are retrenched, or receive an offer from a competitor.

By then, the clause may already have serious practical consequences.

A restraint of trade is a contractual undertaking that usually limits what an employee may do after leaving employment. It may restrict the employee from working for a competitor, approaching clients, using confidential information, or operating in a particular industry, area or market for a certain period of time.

For employers, restraints can be important. Businesses are entitled to protect legitimate commercial interests, including confidential information, trade connections, client relationships, pricing models, business strategy and other sensitive knowledge. Where an employee has had access to those interests, a restraint may be a necessary protection.

For employees, however, a restraint can affect future career choices and earning capacity. It can limit where they work next, which clients they engage with, or whether they can start a competing business. This is why restraint clauses should never be treated as ordinary administrative wording.

In South African law, restraint of trade agreements are generally recognised, but their enforceability depends on whether they are reasonable. A court will usually consider whether the employer has a legitimate protectable interest and whether the restraint goes further than necessary to protect that interest. A restraint that simply prevents competition, without protecting a genuine business interest, may be vulnerable to challenge.

One of the most common misunderstandings is that dismissal automatically cancels a restraint of trade. That is not necessarily correct. Recent Labour Appeal Court commentary has confirmed that dismissal does not, by itself, mean a restraint falls away. The reason for termination may be relevant to the surrounding circumstances, but the central enquiry remains whether the restraint is reasonable and enforceable. This matters for both sides.

An employer should not assume that a restraint will automatically be enforced simply because it appears in a signed contract. The employer must still be able to show what interest is being protected and why the restriction is reasonable in relation to the employee’s role.

An employee should not assume that because the employment relationship ended badly, or because they were dismissed, they can ignore the restraint. Post-employment obligations may still apply, depending on the wording of the agreement and the facts of the matter.

The strongest restraint clauses are usually those that are specific, role-related and carefully drafted. A senior employee who has access to strategic plans, confidential pricing, key clients and sensitive business information may justify a different level of protection to  a junior employee with limited exposure to confidential information or customer influence.

This is where many employers create unnecessary risk. They use the same restraint clause across all contracts, regardless of role, seniority or actual exposure. A restraint should not be used as a blanket protection tool. It should be connected to a real business concern.

Employers should ask: What exactly are we trying to protect? Does this employee have access to that information or relationship? Is the duration reasonable? Is the geographic area justified? Is the scope of work too broad? Can we explain why this restraint is necessary if challenged?

Employees should ask equally important questions before signing. How long does the restraint apply for? Which competitors, industries or clients are included? Does it stop me from working completely, or only from doing certain types of work? What happens if I am dismissed or retrenched? Could this clause affect my next opportunity?

Confidential, proprietary information is often central to restraint disputes. Employers may seek to protect client lists, pricing structures, tenders, product plans, business strategies or internal methods. However, not all information is confidential simply because an employer labels it as such. There is also an important distinction between confidential information belonging to the employer and the employee’s own general skill, knowledge and experience, even if it was acquired while working for the employer.

Employees are entitled to continue using their skills and experience. What they may not be entitled to do is use confidential, proprietary information or client relationships gained through employment in a way that unfairly prejudices  the former employer.

Client relationships can also be a protectable interest, particularly where the employee has meaningful influence over those relationships. In some industries or businesses, employees become closely associated with key clients, understand their needs, influence decisions and hold the relationship on behalf of the employer . In those circumstances, a restraint may be used to prevent the immediate diversion of clients to a competitor.

The best time to deal with a restraint of trade is not after resignation, dismissal or retrenchment. By then, the employee may already have accepted a new role, the employer may feel exposed, and the matter may quickly become urgent and costly.

For employers, the safer approach is to draft restraints carefully from the start, review them when roles change, and avoid overreaching. For employees, the safer approach is to understand the clause before signing and obtain advice before accepting a new opportunity that may trigger the restraint.

A restraint of trade clause is not just a paragraph in a contract.

It is a legal and commercial risk point that can shape what happens long after the employment relationship has ended.

Good employment relationships start with clarity. Good exits require it too.