Skip to content

Illustration by Security Management

How to Plan Out Your Workplace Investigation Interviews

Security Management has partnered with SHRM to bring you relevant articles on key workplace topics and strategies.

Before you launch a workplace investigation, take the time to plan out how you will conduct your interviews. They will lay the groundwork for everything that will follow.

This article highlights key aspects of an investigation's interview process, from questions to ask to the timing of the investigation. A subsequent article (available at will focus on confidentiality issues arising during investigations.

The planning process for these interviews “does not have to be protracted, but it does need to be thorough,“ said Martha Boyd, an attorney with Baker Donelson in Nashville, Tennessee. “Having a basic outline of your investigatory process, an initial list of witnesses, and an initial review of documents and videos on the front end can save you a lot of time on the back end.”

Gather Witnesses and Information

Typically, an investigator starts with a core group of witnesses and then may identify others who they believe have relevant information. “As you start to interview those people, you may realize that they do not have relevant information; their information is cumulative from what you’ve heard from other people; or they have information that, while interesting, is unrelated to the subject of your investigation,” Boyd said.

There’s often a temptation to veer off into other topics, particularly if the investigator recognizes the potential for legal liability to the employer, but the investigator needs to resist that inclination and stay focused. “That said, definitely note what you learn about any other potential areas of concern and provide that information to the employer so those new matters can be separately investigated,” she said.

Questions to Ask

Here are some possible key questions for the complainant, according to Anne Knox Averitt, an attorney with Bradley in Birmingham, Alabama:

  • What happened?
  • Who was involved?
  • If the complaint is something heard through the grapevine, where did this information come from?
  • Who witnessed it?
  • What concerns you about it?
  • Is there any background information that you think is relevant?

For witnesses:

  • What did you observe?
  • For any information provided, if not based on firsthand observations, where did that information come from?
  • Who did witness it?

For the accused:

  • Did this event happen?
  • What is your perspective?
  • Is there any background information that you think is relevant?
  • Do you understand the complainant's perspective?

Investigation Do’s and Don’ts

Ideally, the investigator builds a rapport where the accused wants to talk with the investigator again and keeps feeding the investigator information after the interview “because they understand it’s a competition for truth-telling,” noted Harry Jones, an attorney with Polsinelli in Dallas, Texas.

“A solid investigation involves the investigator interviewing the complainant, the accused, and witnesses; taking notes; asking open-ended questions; asking follow-up questions; and really drilling down if an answer does not make sense,” Boyd said.

“Investigators should not terminate the interview until they have completely exhausted the subject and asked about any inconsistencies in the witnesses’ statements,” she added. “It is fine to script a few questions in advance, but recognize that you need to allow the flexibility to vary from those questions if the interview elicits more questions.”

Whenever possible during an interview, have a third person in the room who can serve as a witness and who can take complete, thorough notes, recommended Tamsin Kaplan, an attorney with Davis Malm in Boston, Massachusetts. “Alternatively, only if the [person being interviewed] willingly agrees, interviews can be recorded,” she said.

An investigator may also ask, “Is there anything else that you think may be relevant to the current situation that you think would be helpful for me to know?” recommended Renee Inomata, an attorney with Casner & Edwards in Boston.

“Don’t assume you know what happened or why, even if this is the fifth person you've interviewed,” cautioned Mary Kuntz, an attorney with Kalijarvi, Chuzi, Newman & Fitch in Washington, D.C.

Timing of Interviews

The sooner the investigation can begin, the better, Inomata noted.

“The timing can be critical, not only to ensure the clearest of witness recollections and preservation of evidence, but to convey that an employer is taking the matter seriously and is prioritizing the safety and welfare of its workforce at the same level as other business priorities,” she said.

However, the timing of an investigation often depends on the subject matter of the investigation and the availability of witnesses, she added. For example, when the allegations involve potential physical harm to an employee, investigations are usually best begun as close to the incident as possible, she said.

But an allegation of one or two unlawful comments may take more time to investigate, said Catherine Scott, an attorney with Morgan, Brown & Joy in Boston. Investigations can range from days to weeks or months, she noted.

“In some situations, where the alleged victim has taken a medical leave of absence, the investigation may be commenced soon after the allegations have been reported but may not be able to be concluded until after the employee returns from the leave and is able to be interviewed,” Inomata said.

In other situations, witnesses may scatter, such as after a global sales meeting or conference. Expediency will be important to ensure that all possible witness statements are collected before losing contact with a witness, she noted.

Boyd cautioned, however, that “investigators should never just hand the witness a piece of paper and tell them to write a statement.” She added, “People who do not write professionally for a living may struggle to write a coherent statement, and you often end up with something that lacks details, isn’t well-constructed, and may be internally inconsistent.”

Jones emphasized that the investigator may expand or contract the investigation. “Often, I’ve been told at entry the investigation will be complex,” he said. “But when I get into it, I find the entire thing revolves around one or two days and one or two people and one or two documents, upon which all the rest depends.”

Want to know more? Explore SHRM's best-practice framework for leading independent workplace investigations. For more security-specific guidance, see the ASIS International Protection of Assets (POA) Manual on investigations.

Allen Smith, J.D., is manager of workplace law content at SHRM, where he has worked since 2005. For the previous 11 years, he was a writer and editor at Thompson Publishing Group, editing the ADA Compliance Guide and The Leave & Disability Coordination Handbook and writing articles for their accompanying newsletters. He earned his law degree from the University of North Carolina School of Law and undergraduate bachelor’s degree in history from Davidson College cum laude. Contact him at [email protected] and follow him on Twitter @SHRMLegalEditor.

© 2022 SHRM. This article is reprinted from with permission from SHRM. All rights reserved.