Workplace Investigation Letter Template For Employers

Yes, you can use a workplace investigation letter template to start or progress an investigation, but it shouldn't read like you've already made up your mind.

The letter's job is to tell the employee what the issue is, what happens next, and what their rights are in the process. It should be clear enough for them to respond properly, while still keeping your business protected.

The tricky part is that different letters do different jobs. A complaint acknowledgment, an investigation meeting letter and a show cause letter shouldn't all say the same thing.

If you've received a complaint and you're trying to work out what to put in writing, here's the practical document pathway most employers need.

What Should A Workplace Investigation Letter Say?

A workplace investigation letter should explain the issue being investigated, the next step in the process, and confirm that no final decision has been made yet.

Think of it as a process letter, not a punishment letter. Your wording should show that you're taking the complaint seriously, but also that you're giving the employee a fair chance to respond.

A good investigation letter usually covers:

• The purpose of the letter: For example, that your business has received a complaint or identified a concern and is starting an investigation.
• The allegation or issue: Give enough detail for the employee to understand what they're responding to, such as dates, times, locations and conduct where known.
• The investigation process: Explain whether you'll be interviewing witnesses, reviewing documents, checking CCTV or holding a meeting.
• Confidentiality expectations: Ask the employee not to discuss the matter except with their support person, adviser or another approved person.
• Support person details: If you're asking them to attend a meeting that may affect their employment, offer the option to bring a support person.
• Response deadline: Give a reasonable timeframe to respond or attend a meeting.
• No prejudgment: State that the investigation is ongoing and no findings or disciplinary decision have been made.

That last point matters. If your letter sounds like the employee has already been found guilty, you may create unnecessary legal risk, especially if you later decide on dismissal or a serious disciplinary outcome.

When Do You Send An Investigation Meeting Letter?

You send an investigation meeting letter when you need an employee to attend a meeting to discuss allegations, provide information or respond to concerns.

This is different from a general complaint acknowledgment. The investigation meeting letter is directed to the person you're interviewing, and it should help them prepare properly.

If the meeting is with the employee who made the complaint, the letter can be fairly simple. You might confirm the meeting time, the purpose of gathering information, confidentiality expectations and who will attend.

If the meeting is with the employee being complained about, you usually need more detail. They should know the substance of the concerns so they can give a meaningful response.

What To Include In An Investigation Meeting Letter

Your meeting letter can include:

• The date, time and place of the meeting, or video call details
• The names and roles of people attending for the business
• The general nature of the allegations or issues
• Documents or information you want the employee to bring
• The employee's right to bring a support person, if appropriate
• Whether the meeting may lead to disciplinary action or a formal disciplinary letter
• Who to contact if they need adjustments, more time or have a genuine availability issue

For example, say you run a cafe in Brisbane and a supervisor complains that a casual employee yelled at them in front of customers on Friday afternoon. Your letter might state that you're investigating an alleged workplace conduct incident on that date, ask the employee to attend a meeting on Tuesday, offer a support person and say no decision has been made.

You wouldn't write, "We have concluded that you abused your supervisor and will be disciplined." That kind of wording suggests the outcome is already locked in. Instead, you might write, "We are investigating an allegation that you raised your voice at your supervisor in front of customers on Friday afternoon. No findings have been made at this stage, and we would like to meet with you to hear your response."

What Not To Put In A Workplace Investigation Letter

A strong investigation letter is careful, not aggressive. It should be direct enough that the employee understands the issue, but not so heavy handed that it looks like the investigation is just a formality.

Try to avoid:

• Loaded language: Words like "guilty", "dishonest" or "proven" can be risky before findings are made.
• Vague allegations: Saying "there have been complaints about your behaviour" may not give the employee enough detail to respond.
• Unnecessary detail about other employees: Share what is needed for fairness, but don't include gossip or sensitive information that isn't relevant.
• Threats: You can explain possible outcomes, but avoid wording that pressures the employee or assumes dismissal will follow.
• Overpromising confidentiality: You can ask people to keep the matter confidential, but you may need to share information to investigate properly.

It also helps to keep the letter factual. If you're relying on documents, rosters, emails, customer complaints or CCTV, say so in a neutral way. If there are multiple allegations, number them so the employee can respond to each one clearly.

Before sending the letter, ask yourself this: if someone outside the business read it later, would it look like you gave the employee a fair chance to understand and respond to the concerns? If the answer is no, the wording probably needs work.

Workplace Investigation Letter Template

Below is a sample template you can adapt for an employee who is being asked to attend an investigation meeting. You should tailor it to the seriousness of the issue, your policies, any applicable award or enterprise agreement, and the facts you actually know.

Subject: Workplace investigation meeting

Dear [Employee name],

We are writing to let you know that [Business name] is conducting an investigation into concerns about [brief description of issue, for example, alleged inappropriate conduct during your shift on Friday, 12 April 2026].

At this stage, no findings have been made and no decision has been reached about the outcome of the investigation. The purpose of the investigation is to gather relevant information and give you an opportunity to respond to the concerns raised.

The issues we would like to discuss with you're as follows:

• [Allegation or concern 1, including date, time, location and relevant details if known]
• [Allegation or concern 2, if applicable]
• [Any relevant policy, procedure or workplace expectation that may apply]

We ask that you attend an investigation meeting at [time] on [date] at [location or video link]. The meeting will be attended by [names and roles of company representatives].

You may bring a support person to the meeting if you wish. The support person's role is to provide support, not to answer questions on your behalf. Please let us know by [date or time] if you'll be bringing a support person and who they will be.

If you have any documents or information that you would like us to consider, please bring them to the meeting or send them to [contact person] before the meeting.

We ask that you keep this matter confidential and don't discuss it with other employees or witnesses, except with your support person, legal adviser or as otherwise approved by [Business name]. This is to help protect everyone involved and maintain the integrity of the investigation.

If you're unable to attend the proposed meeting time, or if you require any reasonable adjustments to participate, please contact [contact person] as soon as possible.

Following the meeting, [Business name] will consider the information available and decide on the next steps. Depending on the outcome, this may include no further action, further investigation, a warning, other disciplinary action or another appropriate outcome. No decision will be made until you have had an opportunity to respond.

Yours sincerely,

[Name]
[Position]
[Business name]

This template is a starting point. For a serious misconduct allegation, a bullying complaint, a sexual harassment complaint or a matter that could lead to termination, it's worth getting the letter reviewed before it goes out.

Other Letters You May Need During The Investigation

Most workplace investigations involve more than one letter. The right document depends on who you're writing to and where you're in the process.

Complaint Acknowledgment Letter

If an employee has made a complaint, you can send them a short acknowledgment. This letter usually confirms that you've received the complaint, explains the next steps, and reminds them about confidentiality and support options.

Sample wording might be:

"Thank you for raising your concerns with us on [date]. We take these matters seriously and will review the information you have provided. We may need to speak with you again as part of our investigation. We ask that you keep this matter confidential while the investigation is underway, except where you need to seek support or advice."

Witness Meeting Letter

If you need to interview a witness, keep the letter focused on gathering information. You don't usually need to share every allegation with a witness. You can simply say that you're looking into a workplace matter and would like to ask them questions about what they saw or heard.

Sample wording might be:

"We are conducting a workplace investigation and understand you may have information that's relevant. We would like to meet with you on [date] to ask some questions about events on [date or general timeframe]. Please keep this matter confidential and let us know if you require any support or adjustments to attend."

Show Cause Letter

A show cause letter is different. It's usually sent after the investigation has progressed and the employer is considering disciplinary action. It sets out the findings or proposed concerns and asks the employee to explain why a particular outcome, such as a final warning or termination, shouldn't be taken.

This isn't the letter to send at the very start of the process. If you send a show cause letter too early, it can look like you skipped the investigation step.

What Happens After You Send The Letter?

After sending the letter, give the employee a reasonable opportunity to prepare. What is reasonable depends on the seriousness and complexity of the issue. A short notice period may be fine for a simple roster issue, but a serious misconduct allegation usually needs more time.

At the meeting, stick to the issues in the letter. Ask open questions, listen carefully and take notes. If new issues come up, don't rush to make a decision in the room. You may need to pause, gather more information and give the employee another chance to respond.

Once you've gathered the relevant information, decide whether the allegations are substantiated, partly substantiated or not substantiated. Your decision should be based on the evidence available, not assumptions or workplace rumours.

If you decide to take disciplinary action, put the outcome in writing. Explain the finding, the reason for the decision, the action being taken and any expectations going forward. If the outcome is dismissal, make sure the process and paperwork are handled carefully.

Good record keeping is important throughout. Keep copies of letters, meeting notes, emails, policies, evidence considered and the reasons for your decision. If the decision is later challenged, these records can make a big difference.

Key Takeaways

• A workplace investigation letter should explain the issue, the process and the employee's right to respond without prejudging the outcome.
• Use different letters for different steps, such as complaint acknowledgments, witness meetings, investigation meetings and show cause processes.
• Give enough detail for the employee to respond, especially where the allegations are serious or may lead to disciplinary action.
• Avoid loaded wording, vague allegations, threats and promises of complete confidentiality.
• Keep clear records of the letters sent, evidence considered, meetings held and reasons for any final decision.

If you'd like help with workplace investigation letters, meeting notices, show cause letters and disciplinary paperwork, you can reach us at 1800 730 617 or team@sprintlaw.com.au for a free, no-obligations chat.