Illegal Strike and Job Abandonment: What Companies Need to Know to Act Safely

THE Superior Labor Court (TST) The court recently confirmed the dismissal for just cause of an employee who, after participating in a strike declared illegal by the courts, refused to return to work even after being notified by the company. The decision reinforces an understanding already consolidated in labor jurisprudence: the illegality of the strike removes the protection that the strike movement normally confers on workers, and the unjustified refusal to return to work can be classified as job abandonment, one of the most serious grounds for just cause provided for in the legislation.

The impact of the illegality of the strike movement.

The relevance of this ruling goes beyond the specific case. It serves as an important warning for companies that face or may face collective work stoppages: not every strike is protected by law, and how a company reacts to these events can make all the difference between a favorable court decision and a labor lawsuit conviction. When a strike is declared illegal, which can happen, for example, when prior notice periods are not respected or when the stoppage involves essential services without maintaining minimum activities, workers who remain absent without justification are left legally unprotected.

Legal requirements for establishing job abandonment.

From a legal standpoint, dismissal for just cause due to job abandonment requires two fundamental elements: prolonged absence from work (generally exceeding thirty consecutive days) and the employee's clear intention not to return. In the case analyzed by the TST (Superior Labor Court), the company was diligent in formally notifying the worker to return to their post, and this notification was a decisive factor in validating the dismissal. Without this record, the company would have risked having the dismissal for just cause annulled, with significant financial consequences such as the payment of severance pay, fines, and possible reinstatement of the employee. Therefore, formalizing communications is not a mere bureaucratic procedure: it is an essential part of any labor dispute management strategy.

Practical guidelines for HR and Legal departments

For Human Resources and Legal departments, the practical guidance is clear. In the event of a collective work stoppage, the first step is to seek legal advice to assess the legality of the strike and, if necessary, file the appropriate lawsuit with the Regional Labor Court. In parallel, the company should maintain documented communication with striking employees, formally notifying them, preferably in writing with proof of receipt, of the need to return to work as soon as the strike is declared illegal. This set of measures creates a robust record that protects the company in any potential litigation.

Conflict management and prevention of workplace risks.

Furthermore, it is crucial that managers are instructed not to make unilateral decisions regarding dismissals or penalties during periods of collective conflict without proper legal counsel. Each situation has its own particularities, and a hasty measure can transform a favorable position for the company into an unnecessary conviction. Having well-defined internal protocols with communication flows, notification templates, and alignment between HR, Legal, and leadership significantly reduces exposure to labor risks during times of instability.

Technical response and specialized support

Situations like this demand a swift, technically sound, and legally sound response. Our firm has a team specializing in Corporate Labor Law, with extensive experience advising companies on collective disputes, dismissal processes, and preventive management of labor risks. If your company is facing or may face scenarios like this, contact us. We work side-by-side with managers and directors to ensure decisions are made with security, legal support, and strategic vision.

Article written by: Rafael Mello, Israel Cruz and Hannah Priante.

“Not all strikes are protected by law. When a strike is declared illegal, workers who refuse to return to work lose legal protection, and the company that acted correctly comes out on top.”