Skip to main content
SA Law Employment Laptop

How to handle an HR Investigation

Support and enhance a culture of trust and accountability in your organisation with our top tips on how to manage an HR investigation.
Mon 6th Oct 2025

Introduction

HR investigations are a critical component in maintaining workplace integrity and ensuring compliance with employment law. They serve as a mechanism to address grievances, allegations of misconduct, and breaches of company policy. Conducting thorough and impartial investigations not only helps to resolve issues but also reinforces a culture of trust and accountability within the organisation.

HR investigations must be conducted in compliance with employment laws and regulations. This includes adhering to the principles of natural justice, giving the accused an opportunity to respond to allegations, and ensuring the investigation avoids any form of discrimination.

Consistency is important. Differing approaches to investigations may lead individuals to claim that they were subject to less favourable treatment than other employees. 

Overview of the investigation process

  1. Initiating a HR investigation
  2. Conducting interviews
  3. Documenting findings
  4. Follow-up
  5. Concluding the investigation
  6. Preventing future issues 

Initiating an HR investigation

The first step in any HR investigation is to gather initial information and determine the scope of the investigation. This involves identifying the nature of the complaint or issue, the parties involved, and any potential witnesses.

It is essential to act promptly to prevent escalation and to preserve evidence. The scope of the investigation should be clearly defined to ensure that all relevant aspects are covered without overstepping boundaries. The employee under investigation should be given a copy of the organisation’s disciplinary procedure and made aware of all relevant policies.  

Conducting interviews

Interviews with employees and witnesses are a cornerstone of the investigation process. It is crucial to approach these interviews with impartiality and confidentiality. Investigators should have no conflicts of interest and conduct investigations without any preconceived assumptions.

Investigators should prepare a list of open-ended questions designed to elicit detailed responses from interviewees. It is important to avoid asking leading questions that may bias the outcome.

Ensuring confidentiality encourages interviewees to be honest and protects the privacy of those involved. It is also important to document interviews accurately, noting both verbal and non-verbal cues.

Documenting findings

Throughout the investigation, meticulous record-keeping is vital. All findings, including interview notes, evidence collected, and any correspondence, should be documented systematically. This documentation will be used in the final report and may be required for legal compliance. Maintaining organised records also facilitates transparency and accountability in the investigation process.

Follow-up

Prepare a report that objectively summarises the findings and provides recommendations based on the evidence. It is important to implement any necessary actions or changes to prevent future issues, such as policy updates or training sessions.

A detailed record should be kept of any action taken post-interviews , which will help an organisation demonstrate that it has upheld its obligations and followed due process. Provide support as necessary to employees involved in the investigation, including access to counselling services if appropriate. 

Concluding the investigation

Upon concluding the investigation, a comprehensive summary report should be prepared. This report should summarise the proceedings, the findings, outline the evidence considered, any follow-up action, and recommendations. Recommendations may include disciplinary measures, policy revisions, or training initiatives. The report should be reviewed by senior management and legal advisors before any action is taken.

Preventing future issues

To prevent future issues, organisations should focus on fostering a positive workplace culture. This can be achieved through regular training on company policies, promoting open communication, and encouraging employees to report concerns without fear of retaliation.

Implementing clear policies and procedures for handling complaints can also deter misconduct and reinforce a culture of integrity. It is important to conduct regular training and keep detailed records of the training that staff have undergone. This will be important in demonstrating that an organisation has upheld their legal obligations.

Get in touch

For help and advice on conducting HR investigations, HR policies and procedures, or other employment law issues, please get in touch with a member of our employment team by emailing employmentteam@salaw.com

Get in touch

Use our handy contact form to send us your enquiry. We’ll direct it to the right legal expert and respond as quickly as possible. It costs nothing to make an enquiry and it is entirely confidential.

See our privacy notice to find out how we use and protect your data.

If you would like to contact a specific member of the SA Law team, you can view all team profiles here

Speak to our law specialists

We understand that if you are experiencing harassment, . Our experts are on your side and here to help you.

Call us on 01727 798000, send us a message over live chat, or complete the enquiry form below to discuss your options.

It costs nothing to make an enquiry and it is entirely confidential. See our privacy notice to find out how we use and protect your data.

If you would like to contact a specific member of the SA Law team, you can view all team profiles here.

Read SA Law's latest employment views & insights
SA Law Red arrow neon light image
Views & Insights
Ban on Controversial NDAs Silencing Abuse

The latest proposed change to the Employment Rights Bill will ban employers from using non-disclosure agreements that silence workplace abuse or harassment.…

Read More
Pride flag waving in Pride Parade
Views & Insights
A Journey of Pride: Defining Moments in LGBTQ+ History

Over the past several decades, the legal landscape in the UK has evolved considerably to enhance protections and support for the LGBTQ+ community, both…

Read More
Relax
Views & Insights
Is Your Business Summer Ready?

The sun is shining, the trilogy of Bank holidays have come and gone and so thoughts are naturally turning to the summer break. July and August present…

Read More
Stained glass window Employment SA Law
Views & Insights
Injury to Feelings: Vento Bands Increased

The President of the Employment Tribunals has confirmed an increase in the compensation bands (known as Vento bands) awarded for injury to feeling in…

Read More
SA Law Employment Laptop
Views & Insights
Employment Rights Bill: ‘The Right to Switch Off’?

What is “The Right to Switch Off”?The Government proposed plans for the “right to switch off” as part of their Employment Rights Bill (ERB). Through this,…

Read More
SA Law Red arrow neon light image
Views & Insights
What next for the UK’s evolving immigration landscape?

The UK’s immigration landscape is rarely stagnant but there have been an unprecedented number of pivotal changes to business immigration law and policy…

Read More
Stained glass window Employment SA Law
Views & Insights
Employment Tribunal Compensation Limits from 6 April 2025

The Government has announced this year’s annual increase to Employment Tribunal compensation limits for certain tribunal awards and other statutory payments,…

Read More
Join our mailing list

Want our latest views & insight along with exclusive event invitations and much more sent directly to you? Discover our Knowledge Share newsletter

Read More