How to Conduct an HR Investigation Process: 5 Steps

A 2023 study found that over half of employees have seen or experienced harassment at work. This shows the importance of HR handling issues properly from the start.

How HR deals with workplace problems can prevent them from getting worse, reduce legal risks, and maintain a positive company culture. An HR investigation is key to addressing concerns, but it must be fair, thorough, and follow the rules.

This article explains how the HR investigation process works, the steps to conduct a successful investigation, and common mistakes to avoid during the process.

What is an HR investigation?

An HR investigation is a formal process used to gather facts and check the truth of a complaint or allegation. The purpose of an HR investigation is to review the issue fairly, find out if any rules were broken, and decide what corrective action to take to resolve the issue.

For example, suppose an employee complains about unfair treatment by their supervisor. In that case, the Human Resources team will gather evidence through interviews to verify the claim and decide on the next steps or actions if found valid, such as counseling, mediation, or disciplinary actions or measures.

Apart from that scenario, some common situations that may prompt an HR investigation, ranging from serious legal violations to workplace misconduct, include:

• Unfair treatment or offensive behavior based on race, gender, age, etc.

• Repeated disrespect, yelling, or making others uncomfortable.

• Stealing or lying about time, money, or company property.

• Not following workplace policies or safety guidelines.

• Being late often, taking long breaks, or not working scheduled hours.

• Giving special treatment or favoritism to certain employees, like promoting or rewarding them due to personal relationships instead of merit.

Favoritism can often lead to pay inequality, which can harm employee morale and cause dissatisfaction. If your organization is on the brink of legal or financial repercussions due to pay inequality, tools like Pay Equity Suite can help fix the issue by addressing the gender pay gap and pay disparities.

How do HR investigations work?

The HR investigation process varies based on the nature of the complaint and the department handling it. Some organizations may involve different departments, such as HR, legal counsel, or third party investigators, depending on the issue.

A workplace investigation  often begins with a complaint of misconduct, filed by the affected employee, a witness, or a manager. Complaints can be made directly to HR, through a supervisor, or anonymously via hotlines or fake emails.

If the issue involves illegal activities (e.g., discrimination or theft), the legal department often handles the investigation. For non-legal issues like favoritism or time abuse, the HR professionals manage the process.

The workplace investigation includes interviewing all parties involved, reviewing relevant documents (e.g., emails, policies), and examining evidence (e.g., security footage, social media, interview statements, interview notes).

Investigators gather facts and may recommend whether the complaint is valid, but the final decision is made by HR and legal. If the complaint is validated, HR and legal work with leadership to determine the appropriate actions.

Lack of clarity around compensation can lead to employee complaints and HR investigations. Avoid this by using pay equity tools to identify and fix pay gaps and develop a clear pay philosophy with your leadership team that explains the “how and why” behind employee pay.

Common mistakes to avoid in HR investigations 

Now that you know how the HR investigation process works, there are common mistakes to avoid during employee complaint investigations.

1. Delayed workplace investigation

   Waiting too long to start an investigation can make it harder to gather accurate, relevant information. It can also make employees feel like their concerns are not being taken seriously. Acting quickly helps ensure a fair investigation and keeps employees trusting the process.

2. Lack of workplace investigation policies and procedures

   Without clear rules and steps for how investigations should be handled, there can be confusion or mistakes. Having a set process ensures consistency, fairness, and helps staff members know what to do, which makes workplace investigations smoother and more reliable.

3. Untrained managers and supervisors in workplace investigations

   Managers who don’t know how to properly handle investigations might make mistakes that affect the results. Proper training ensures they can remain neutral, handle complaints correctly, and conduct the process fairly.

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4. Failure to document the workplace investigation process

   Not keeping records of the HR investigation process can cause problems later, especially if someone questions the results. Proper documentation helps show that the investigation was done fairly and is important for defending decisions if needed.

5 steps in an HR investigation process 

So, how do you conduct an investigation in the workplace? The following steps provide a clear approach to ensure a fair and thorough process:

1. Step 1: Receive and assess employee complaints and misconduct

   As mentioned earlier, the HR investigation process starts by receiving and assessing employee complaints or misconduct. Listen carefully to understand the issue and collect all relevant details.

   Decide if the complaint is serious enough to investigate and if immediate action is needed. Maintaining confidentiality is important to protect everyone's privacy and ensure fairness.

2. Step 2: Plan and organize the HR investigation process

   If the complaint is serious, plan the investigation by deciding who to interview, what evidence to collect, and how long the process will take. Prepare questions related to the issue for the complainant, the accused, and any witnesses.

   Ensure the process is organized, fair, and follows all relevant laws, including employee rights and employment laws. Remain impartial throughout to avoid bias and support a just outcome.

3. Step 3: Collect evidence and interview all parties involved

   Collect relevant evidence, such as documents, emails, or footage, and conduct interviews with the complainant, the accused, and any witnesses. Make sure investigation interviews are neutral, respectful, and allow everyone to speak openly without fear of retaliation.

4. Step 4: Analyze findings and identify policy violations or misconduct

   After collecting all the evidence, review it to determine if any company policies or laws were violated. The team focuses on the facts, avoiding assumptions, to ensure the decision is based on evidence.

   If a violation is found, its nature and seriousness are assessed, and the findings are documented in an investigation report for clarity and future reference.

5. Step 5: Take action and apply corrective measures to close the case

   Based on the findings, appropriate action is taken, such as a warning, suspension, or termination, depending on the severity. Both the complainant and the accused are informed of the outcome, with confidentiality maintained.

   Steps may also be taken to prevent future issues, such as updating policies or providing training. The case is then closed, and all documentation is stored for future reference. Conflict resolution is addressed, and necessary disciplinary measures are applied to both the employee and the involved parties.

Most companies dealing with pay gaps and employee complaints can use statistical tools to identify factors affecting pay and uncover potential issues. Tools like regression analysis help determine if pay differences are fair or need to be addressed.

Possible questions to ask during an HR investigation

If you're part of the team conducting an HR investigation, here are some questions that you can ask to gather information, ensure a fair process, and take thorough notes.

1. For all individuals involved (complainant, respondent, witnesses)

   About the incident

   1. What happened?

   2. When and where did it happen?

   3. Who was there?

   4. What did you see, hear, or do?

   5. Can you remember any exact words used?

   6. How did you react right away?

   7. Has something like this happened before? If so, when and what happened?

   8. Has anything happened since then?

   9. Do you have any evidence, such as documents, emails, or texts?

   Context and background

   1. What do you know about the company’s policies on [relevant policy, e.g., harassment, code of conduct]?

   2. What is your relationship with [other involved parties] at work?

   3. Have there been any previous issues or conflicts between those involved?

   4. Were there any special circumstances leading to the incident?

   Impact and resolution

   1. How has this incident affected you?

   2. What do you hope will happen from this investigation?

   3. Do you have any suggestions for solving or preventing this issue in the future?

2. For the complainant (the person who reported the issue)

   1. When did you decide to report this?

   2. Who did you report it to, and when?

   3. What steps would you like the company to take?

   4. Do you know of any witnesses who can support your story?

3. For the respondent (the person accused in the complaint)

   1. How do you respond to the allegations?

   2. Can you explain what happened?

   3. Do you have any evidence or witnesses that can support your account?

   4. Do you know the company’s policies on [relevant policy]?

   5. Are you aware that this could lead to legal proceedings?

4. For witnesses

   1. Where were you when the incident happened?

   2. What did you see or hear?

   3. Did you hear any specific conversations?

   4. How did the people involved act?

   5. Would you be willing to testify if needed for legal actions related to the incident?