Workplace Investigations

Once the decision to undertake a workplace investigation has been made, it is important to decide who is the most appropriate person to conduct the investigation. For the investigation process to run smoothly a single lead investigator should be selected, although they may work with a larger team. The lead investigator and investigation team can be internally or externally appointed.

In deciding whether to appoint an external investigator an employer should consider:

• the nature of the allegations;
• the seniority of the respondent;
• whether a fair investigation can be conducted internally without any actual or perceived bias;
• whether there is a dedicated HR department with someone who has the required capability, skills and experience to conduct the investigation; and
• whether the employer wants the investigation to be covered by legal professional privilege.

If the employer decides to investigate the matter internally without appointing a third party, then the investigator does not need to have any specific qualifications. However, it is prudent to confirm that the investigator has the time and skills to conduct the investigation and that they can be objective.   

The examinations can be carried out internally by designated internal employees, by external specialists, or by a combination thereof. The addition of external advisors is particularly recommended if the allegations are against an employee of a high hierarchical level[1], if the allegations concerned are quite substantive and, in any case, where an increased degree of independence is sought.

The employer should conduct a workplace investigation on its own; however, an outside firm experienced in interviewing witnesses and assessing the credibility of evidence may also be appointed to assist with the workplace investigation.

There is no minimum qualification or criteria provided under Thai laws. It is worth noting that anyone who has been accused of misconduct or potentially has a conflict of interest should be excluded from any role in the investigation. This is to avoid a challenge from the subject employee that the investigation was not conducted fairly.

There are circumstances of misconduct in the workplace that can also constitute criminal conduct and be subject to a criminal or regulatory investigation. This can include physical or sexual assault, theft, fraud, illegal drug use or stalking.

An employer can proceed with an investigation to determine whether the respondent engaged in misconduct on the balance of probabilities. The employer can terminate an employee’s employment before the outcome of any criminal investigation. However, the employer must keep in mind that procedural fairness must be afforded to the employee, particularly in circumstances where an employee is awaiting the outcome of a court proceeding.  

Alternatively, an employer may decide to suspend the employee pending the outcome of the criminal investigation. If a criminal act has been committed, then the employer may decide to terminate the employee’s employment.

Co-operation with the police and regulatory authorities is sensible and evidence can be compelled by the police or regulators by, for example, a subpoena, search warrant or an order for production.

The actions of the employer may carry through to a subsequent state proceeding. First and foremost, any prohibitions on the use of evidence must be considered. Whereas in civil proceedings the interest in establishing the truth must merely prevail for exploitation (article 152 paragraph 2, Swiss Civil Procedure Code), in criminal proceedings, depending on the nature of the unlawful act, there is a risk that the evidence may not be used (see question 27 and article 140 et seq, Swiss Civil Procedure Code).

Employers are not required to wait until the police or regulatory investigations are finished before conducting their disciplinary investigations, but it is necessary to ensure that such internal proceedings do not compromise the integrity of an investigation or result in misrepresentation or a miscarriage of justice. The level of proof for internal disciplinary action is less than the level of proof for criminal proceedings.