Workplace Investigations
Contributing Editors
Workplace investigations are growing in number, size and complexity. Employers are under greater scrutiny as of the importance of ESG rises. Regulated industries such as finance, healthcare and legal face additional hurdles, but public scrutiny of businesses and how they treat their people across the board has never been higher. Conducting a fair and thorough workplace investigation is therefore critical to the optimal operation, governance and legal exposure of every business.
IEL’s Guide to Workplace Investigations examines key issues that organisations need to consider as they initiate, conduct and conclude investigations in 29 major jurisdictions around the world.
Learn more about the response taken in specific countries or build your own report to compare approaches taken around the world.
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06. Can co-workers be compelled to act as witnesses? What legal protections do employees have when acting as witnesses in an investigation?
06. Can co-workers be compelled to act as witnesses? What legal protections do employees have when acting as witnesses in an investigation?
Thailand
Thailand
- at Chandler MHM
- at Chandler MHM
Normally, the work rules prescribe requirements for cooperation with investigations. An employer may instruct co-workers to give statements as witnesses as this would be a fair and legitimate order of the employer, because investigations are conducted to maintain a good working environment.
Witness protection measures in a workplace can vary as no minimum standard has been set and they are generally subject to work rules and regulations. However, some legislation, which may not relate to a workplace investigation conducted by an employer, also protects the witnesses who are helping authorities investigate violations under the relevant acts. For example, the Labor Relation Act B.E. 2518 (1975) prohibits an employer from terminating an employee or conducting any action that may result in the employee being unable to work because of filing a complaint or being a witness for the authorities, or providing information on issues related to labour protection laws to the authorities.
The employer may have a policy of non-retaliation for the protection of witnesses who have given statements and evidence for a workplace investigation.
United Kingdom
United Kingdom
- at Slaughter and May
- at Slaughter and May
Employees may be reluctant to be interviewed or act as witnesses as part of an investigation, perhaps due to fear of reprisals. The investigator should discuss any concerns with the employee and attempt to alleviate any fears.
In general terms, an employer should not compel any employee to provide a witness statement. There may be circumstances in which this could be seen as a reasonable management instruction (and any refusal to comply treated as a disciplinary matter), but these will be rare. Evidence that is compelled is unlikely to be particularly useful to the investigator.
It may be possible to establish an express or implied obligation for senior managers to report on another employee's misconduct – as a feature of either their employment contractual duties, their fiduciary duties or their implied duty of fidelity. However, it is unlikely, in the absence of an express obligation, that a junior employee would be compelled to give evidence against a colleague.
Employees who act as witnesses benefit from their usual employment protections, and must be treated as per their contractual and statutory rights, as well as any policy governing the investigation. If the investigation involves allegations which could involve discrimination, the EA 2010 extends protection from victimisation to “giving evidence or information in connection with proceedings under this Act”. Witnesses should therefore not be subject to any detrimental treatment because they have acted as a witness in this type of investigation. Witnesses may also be entitled to protection as whistleblowers if their evidence amounts to a protected disclosure (see question 9).
07. What data protection or other regulations apply when gathering physical evidence?
07. What data protection or other regulations apply when gathering physical evidence?
Thailand
Thailand
- at Chandler MHM
- at Chandler MHM
The basic premise is that all evidence is admissible unless it violates the law of admissibility and production of evidence, which may vary depending on the jurisdiction. In a criminal court, for example, evidence gathered in violation of the fruit of the poisonous tree doctrine would be typically inadmissible, yet in a civil court, this doctrine would not be an exclusionary rule.
The Personal Data Protection Act, BE 2562 (2019) (PDPA), which is the main data protection law in Thailand, applies when collecting, using, and disclosing pieces of evidence containing the personal data of employees. If the investigation requires sensitive information of the employee under investigation, for example, race, ethnic origin, political opinion, religious or philosophical beliefs, sexual behavior, criminal records, health data, disability, genetic data and biometric data, consent from the employee should be obtained.
United Kingdom
United Kingdom
- at Slaughter and May
- at Slaughter and May
Most forms of workplace surveillance involve the processing of personal data that is regulated by the UK GDPR and DPA 2018. The UK GDPR requires that personal data must be processed lawfully, fairly and in a transparent manner; it also must be adequate, relevant and limited to what is necessary concerning the purposes for which it is processed.
Employers should ensure that they have undertaken a data protection impact assessment (DPIA) to document the lawful basis for processing data, and informed employees that their files may be searched before proceeding. They should also ideally have a clear policy on the use of electronic communications systems, detailing when, how and for what purpose they may be monitored by the employer. In Q3 2023 the ICO produced new guidance on monitoring workers (https://ico.org.uk/for-organisations/uk-gdpr-guidance-and-resources/employment/monitoring-workers/) and on email and security (https://ico.org.uk/for-organisations/uk-gdpr-guidance-and-resources/security/email-and-security/) which employers should bear in mind during investigations. Employers should also be prepared to make the data collected through employee monitoring available to employees, should the employee submit a data subject access request under the DPA 2018.
The IPA 2016 makes it unlawful in certain circumstances to intercept a communication (such as one on an employer’s telephone or computer network) in the course of its transmission in the UK. The IPA Regs 2018 set out the circumstances where, in a business context, such interception will be lawful. These include monitoring or recording communications without consent to: establish the existence of facts; ascertain compliance with the regulatory or self-regulatory practices or procedures relevant to the business; ascertain or demonstrate standards which are or ought to be achieved by persons using the system; and prevent or detect crime.
Covert surveillance can lead to a breach of an employee's right to privacy under the HRA 1998. The employer will need to consider if covert surveillance is proportionate, which will depend on the facts of each case. Employers should be careful not to use the investigation as an excuse to undertake a "fishing expedition", and should avoid gathering material that is obviously personal, such as private messages and diary entries (see question 8).