Workplace Investigations

Having been informed of an alleged infraction committed by an employee, the employer must prepare a detailed written accusation and notify the employee.

Moreover, if the alleged infraction constitutes gross misconduct and the employer is considering dismissal, a formal statement of the employer’s intention to dismiss the employee should accompany the accusation. If this is not expressly done, the employer will be unable to dismiss the employee and may only apply one of the conservatory sanctions. A copy of these documents must be sent to the works council, if any, and, should the employee be a union member, to the respective trade union.

Notwithstanding this, if before preparing the accusation the employer needs to further investigate the facts and circumstances, it may open a preliminary investigation aimed at collecting all the facts and circumstances and conclude if there are grounds to bring an accusation against the employee.

The preliminary investigation must start within 30 days of the employer becoming aware of the facts, be diligently carried out (but with no maximum period laid down by law) and concluded within 30 days of the last investigatory act. Furthermore, the preliminary investigation will suspend the relevant statutory deadlines and statutes of limitations (ie, 60 days from the date of acknowledgment, by the employer or a supervisor with disciplinary power, of the facts to enforce disciplinary action against the employee and one year from when the facts occurred, regardless of the employer’s acknowledgment, unless the infraction also constitutes a criminal offence, in which case the longer statutes of limitation established in criminal law will apply).

Internal investigations are usually initiated after reports about possible violations of the employer's code of conduct, applicable laws or regulations have been submitted by employees to their superiors, the human resources department or designated internal reporting systems such as hotlines (including whistleblowing hotlines).

For an internal investigation to be initiated, there must be a reasonable suspicion (grounds).[1] If no such grounds exist, the employer must ask the informant for further or more specific information. If no grounds for reasonable suspicion exists, the case must be closed. If grounds for reasonable suspicion exist, the appropriate investigative steps can be initiated by a formal investigation request from the company management.[2]

There are no specific rules in the Portuguese Labour Code on this matter.

However, article 332 of the PLC states that the employer should keep an updated record of disciplinary sanctions, so the competent authorities can easily verify compliance with applicable provisions. Accordingly, it is advisable to maintain a record of disciplinary sanctions during the entire employment relationship.

Also, please note that some collective bargaining agreements state that the disciplinary register must be deleted from the employee’s record periodically.

From an employment law point of view, there is no statute of limitations on the employee's violations. Based on the specific circumstances (eg, damage incurred, type of violation, basis of trust or the position of the employee), a decision must be made as to the extent to which the outcome should remain on the record.

From a data protection point of view, only data that is in the interest of the employee (eg, to issue a reference letter) may be retained during the employment relationship. In principle, stored data must be deleted after the termination of the employment relationship. Longer retention may be justified if rights are still to be safeguarded or obligations are to be fulfilled in the future (eg, data needed regarding foreseeable legal proceedings, data required to issue a reference letter or data in relation to a non-competition clause).[1]