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The interviews are done, your notes run to forty pages, and now someone has to turn all of it into a document a vice president, an agency investigator, or a jury could read and follow. If you are looking for a sample investigation report or an HR investigation template, you are probably at that point.
This article gives you a template you can copy, explains what belongs in each section, and then shows a complete worked sample using a fictional case.
What the Report Has to Do
An employer's response to a complaint is judged on whether it was prompt and appropriate. In harassment cases the employer may have to prove that it exercised reasonable care to prevent and promptly correct the behavior, the standard from Faragher v. City of Boca Raton (1998). The report is the main evidence of that care. Some state rules are explicit: California's regulations call for a fair, timely, and thorough investigation that "reaches reasonable conclusions based on the evidence collected."
A good report therefore answers five questions for a reader who was not involved:
- What was alleged?
- What did the investigator do, and when?
- What does the evidence show?
- What did the investigator conclude, and why?
- Which policies apply?
Write on the assumption that the report will be read by people outside the company. Whether it is privileged is a decision for counsel, made at the start of the investigation; see Upjohn warnings and privilege in internal investigations.
HR Investigation Report Template
Copy the structure below and adapt it to your organization.
CONFIDENTIAL INVESTIGATION REPORT
Case number: Date of report: Investigator (name, title): Report prepared for:
1. Summary
One paragraph: who complained about whom, the nature of the allegations, the dates of the investigation, and the conclusion on each allegation.
2. Background
The parties, their positions and reporting relationships, and the work setting. How and when the complaint was received.
3. Allegations and scope
Each allegation, numbered and stated neutrally. Note anything outside the scope and why.
4. Policies and standards applied
The policies that may have been violated, with the relevant language quoted or attached. The standard of proof used.
5. Investigation process
Interim measures taken. Table of interviews (name, role, date, who was present). List of documents and other evidence reviewed. Any witness not interviewed or evidence not obtained, and why.
6. Evidence
For each allegation: the complainant's account, the respondent's account, witness accounts, and documentary evidence. Undisputed facts first, then disputed facts.
7. Credibility assessment
Where accounts conflict, the factors that led the investigator to credit one over another.
8. Findings
For each allegation: Substantiated, Not substantiated, or Inconclusive, with the reasoning. Policy conclusions, not legal conclusions.
9. Other issues identified
Matters outside the allegations that management should know about.
10. Recommendations
Include only if your policy assigns this to the investigator.
11. Attachments
Numbered list: complaint, interview summaries, documents, policies.
Signature and date
Section-by-Section Guidance
Summary
Write it last. A reader should learn the outcome in the first paragraph and read on for the reasons.
Allegations and scope
Translate the complaint into specific, testable statements. "Created a hostile environment" cannot be investigated. "On or about March 3, said X to Y in the break room" can. Number each allegation and keep the same numbering throughout the report. If you built an investigation plan and complaint intake form at the start, the allegations come straight from it.
Policies and standards
Quote the policy language you are applying. State the standard of proof. Most employers use a preponderance of the evidence, meaning more likely than not. Confirm with counsel and check any contract or policy that sets a different standard.
Process
This section proves thoroughness and promptness. Give dates. List everyone interviewed and every category of document reviewed. If you did not interview someone a party named, say why (for example, the witness had no first-hand knowledge or declined to participate). Gaps explained in the report cause far less trouble than gaps discovered later.
Evidence
Organize by allegation, not by witness. Summarize what each person said about that allegation and identify the documents that bear on it. Use neutral verbs: "stated," "said," "recalled." Avoid "admitted," "claimed," or "insisted" unless the word is exactly right. Quote key statements when the exact words matter.
Credibility
When accounts conflict, explain your reasoning in terms a reader can check: corroboration, plausibility, consistency, motive, and opportunity to observe. Do not rest a finding on demeanor alone. Our article on credibility assessment in workplace investigations covers the factors in depth.
Findings
Make one finding per allegation and tie each to the evidence. Keep to conclusions about facts and company policy. "The conduct violated the Respectful Workplace Policy" is appropriate. "The conduct was unlawful harassment under Title VII" is a legal conclusion that belongs to counsel.
Recommendations
Many employers have the investigator stop at findings and assign the disciplinary decision to management and HR leadership. This keeps fact-finding separate from the penalty. Follow your policy. If you include recommendations, put them in their own section so the findings stand independently.
A Worked Sample Investigation Report
The following sample is fictional. The company, people, dates, and facts are invented for illustration.
CONFIDENTIAL INVESTIGATION REPORT Case number: ER-0417 Date of report: April 21 Investigator: Dana Reyes, HR Business Partner Report prepared for: Maria Chen, Vice President, Human Resources
1. Summary
On April 6, Priya Shah, Warehouse Associate, reported to Human Resources that her shift supervisor, Tom Becker, had made repeated comments about her appearance and had assigned her less desirable duties after she objected. I investigated three allegations between April 6 and April 20. I interviewed six people and reviewed shift assignment records, text messages, and Mr. Becker's training records. I find Allegation 1 substantiated, Allegation 2 substantiated, and Allegation 3 inconclusive.
2. Background
Ms. Shah has worked at the Riverside distribution center for two years on second shift. Mr. Becker has supervised second shift for four years and is responsible for daily station assignments. Ms. Shah made her report in person to me on April 6. I documented it that day and she reviewed and signed the written statement (Attachment 1).
3. Allegations and scope
- Between approximately February and April, Mr. Becker made comments to Ms. Shah about her body and clothing on multiple occasions.
- On March 26, Mr. Becker sent Ms. Shah a text message commenting on her appearance.
- After Ms. Shah told Mr. Becker on March 27 to stop, he assigned her to the returns station more often than before, in response to her objection.
Ms. Shah also mentioned general dissatisfaction with shift scheduling. That concern does not involve Mr. Becker's conduct toward her and is outside the scope of this report. I have referred it separately to the Operations Manager.
4. Policies and standards applied
Respectful Workplace Policy, section 2 ("unwelcome comments about a person's body or appearance") and section 5 (prohibition on retaliation) (Attachment 7). Findings are based on a preponderance of the evidence.
5. Investigation process
Interim measures: On April 6, with the Operations Manager's approval, Ms. Shah's direct reporting line was moved to the first-shift supervisor's overlap lead so that Mr. Becker would not assign her work. Her shift, pay, and hours did not change. On April 6, I asked IT to preserve Mr. Becker's company phone records and the shift assignment data for January through April.
Interviews:
| Person | Role | Date | Present |
|---|---|---|---|
| Priya Shah | Complainant | April 6, April 16 | D. Reyes |
| Luis Ortega | Associate, second shift | April 8 | D. Reyes |
| Kim Tran | Associate, second shift | April 8 | D. Reyes |
| Sam Wright | Lead, second shift | April 9 | D. Reyes |
| Tom Becker | Respondent | April 13 | D. Reyes; A. Patel (note-taker) |
| Joan Miller | Operations Manager | April 14 | D. Reyes |
Documents reviewed: Ms. Shah's signed statement; screenshots of text messages provided by Ms. Shah (Attachment 2); Mr. Becker's company phone message log (Attachment 3); station assignment records for January 5 through April 3 (Attachment 4); Mr. Becker's harassment-prevention training record (Attachment 5); Mr. Becker's personnel file.
Mr. Becker named one additional witness, a former associate who left the company in January. I did not interview him because he was not employed during the period of the alleged conduct.
6. Evidence
Allegation 1 (comments). Ms. Shah stated that beginning in February, Mr. Becker commented on her appearance roughly once a week, including "those jeans are doing you favors" and "you should wear that more often." She said the comments were made at the assignment board at the start of shift. Mr. Ortega stated that he heard Mr. Becker say "those jeans are doing you favors" to Ms. Shah in early March and that she "looked at the floor and walked off." Ms. Tran stated she heard Mr. Becker make "comments about how Priya looked" on two or three occasions but could not recall the words. Mr. Wright stated he had not heard any such comments. Mr. Becker stated that he "may have complimented" Ms. Shah once or twice, that it was "just being friendly," and that he did not recall the specific words.
Allegation 2 (text message). Ms. Shah provided a screenshot of a text received March 26 at 10:42 p.m. from Mr. Becker's company phone number: "You looked really good tonight." The company message log shows a message sent from Mr. Becker's phone to Ms. Shah's number at that time. Mr. Becker acknowledged sending it and said he "meant nothing by it."
Allegation 3 (assignments). Ms. Shah stated that after she told Mr. Becker on March 27 to stop commenting on her appearance, he assigned her to returns, which associates regard as the least desirable station, "almost every night." Mr. Becker stated that he recalled Ms. Shah saying "knock it off" but that assignments were based on staffing needs. Assignment records show Ms. Shah was assigned to returns on 5 of 58 shifts from January 5 through March 27, and on 4 of 5 shifts from March 30 through April 3. Ms. Miller stated that two associates trained on returns were absent that week. Attendance records confirm those absences on three of the five days.
7. Credibility assessment
On Allegation 1, I credit Ms. Shah's account. It is corroborated in part by Mr. Ortega, who recalled the same words, and by Ms. Tran. Neither witness has an apparent reason to favor Ms. Shah. Mr. Becker did not deny making comments and could not recall what he said. The text message in Allegation 2 is consistent with the type of comment Ms. Shah described. Mr. Wright's statement that he heard nothing is not inconsistent, because he works at the far dock at the start of shift.
8. Findings
Allegation 1: Substantiated. It is more likely than not that Mr. Becker made repeated comments about Ms. Shah's appearance between February and March. The comments were unwelcome and violate section 2 of the Respectful Workplace Policy.
Allegation 2: Substantiated. The message is documented and acknowledged. It violates section 2 of the policy.
Allegation 3: Inconclusive. The change in assignments immediately followed Ms. Shah's objection, which supports her account. The absence of two returns-trained associates that week is a plausible alternative explanation for at least three of the four shifts. The period after her objection and before the reporting change is five shifts, which is too short to establish a pattern. The evidence does not allow a finding either way.
9. Other issues identified
Mr. Becker's last harassment-prevention training was completed three years ago. Station assignments are made at the supervisor's sole discretion with no rotation rule.
10. Recommendations
Under company procedure, corrective action will be determined by the Vice President, Human Resources, and the Operations Manager. I recommend that any reassignment of Ms. Shah's reporting line be made permanent only with her agreement, and that HR check in with her at 30, 60, and 90 days regarding possible retaliation.
11. Attachments
1. Signed statement of P. Shah. 2. Text message screenshots. 3. Company phone message log. 4. Station assignment records. 5. Training record. 6. Interview summaries. 7. Respectful Workplace Policy.
Dana Reyes, April 21
Why the sample works
- Each allegation is specific, numbered, and resolved separately.
- The process section shows the dates, the interim measures, and the one witness not interviewed, with the reason.
- Evidence is reported in neutral language, with numbers where records exist.
- The inconclusive finding is explained and not forced in either direction.
- Findings refer to company policy, not to statutes.
Common Mistakes in Investigation Reports
| Mistake | Why it hurts | Fix |
|---|---|---|
| Legal conclusions ("unlawful harassment," "hostile work environment") | Creates an admission the investigator is not qualified to make | State facts and policy violations |
| Adjectives and speculation ("clearly lying," "obviously uncomfortable") | Signals bias | Describe what was said and observed |
| Organizing by witness | Reader cannot see the evidence on each allegation | Organize by allegation |
| Unexplained gaps | Looks incomplete or one-sided | Say who was not interviewed and why |
| Findings without reasoning | Cannot be defended or reviewed | Tie each finding to specific evidence |
| Mixing findings and discipline | Suggests the outcome drove the findings | Separate sections, or separate decision-makers |
| Including medical or unrelated personal information | Privacy and discrimination risk | Include only what bears on the allegations |
After the Report: Files, Drafts, and Distribution
Limit distribution to those who must decide or act. The parties are generally told the outcome; they are not usually given the report. Keep the report, notes, and evidence in a separate investigation file with restricted access. See documentation and security protocols for investigation evidence and HR documentation: what to record.
Ask counsel how to handle drafts and interview notes, and do not discard anything once a charge, demand letter, or lawsuit is reasonably anticipated. Federal regulations require personnel and employment records to be kept at least one year, and all relevant records to be preserved until final disposition once a discrimination charge is filed (29 CFR 1602.14). Your HR document retention schedule and state law may require longer.
The report is step nine of ten in the HR investigation process, step by step; the quality of the interviews that feed it is covered in workplace investigation interview questions and technique. All of our related articles are in the Workplace Investigations Guide.
Report writing is easier to learn by doing than from a template. The Internal Investigations Certificate Program includes documenting findings and recommendations and preparing and writing professional investigation reports among its practice topics, and participants receive sample investigation forms and templates.
Frequently Asked Questions
What should an HR investigation report include?
A summary, background, the specific allegations and scope, the policies and standard applied, the process followed (interviews and documents), the evidence on each allegation, a credibility assessment, findings with reasoning, and attachments. Recommendations are included only if your policy assigns them to the investigator.
How long should an investigation report be?
Long enough for an uninvolved reader to follow the evidence and reasoning, and no longer. A single-allegation matter may need two or three pages. A multi-allegation matter with many witnesses may need considerably more. Put supporting material in attachments.
Should the report include recommendations for discipline?
It depends on your policy. Many employers separate fact-finding from the disciplinary decision so the findings are not seen as shaped by a preferred outcome. If recommendations are included, keep them in a separate section.
Does the complainant or the accused get a copy of the report?
Generally not. Both are usually told the outcome in summary form. Union contracts, public-sector rules, state personnel-file laws, or litigation may require more disclosure, so check with counsel.
What does "inconclusive" mean in a finding?
It means the evidence does not allow the investigator to conclude that the conduct more likely than not occurred or did not occur. It is not a finding that the complainant was untruthful. Explain what evidence was lacking.
Should the report say the conduct was illegal?
No. HR investigators should make findings of fact and of company policy. Whether conduct violates a statute is a legal conclusion for counsel.
The Bottom Line
An investigation report is the permanent record of how the employer responded. Structure it by allegation, show your process and dates, report evidence neutrally, explain every credibility call, and keep to facts and policy. Start from the template above, compare your draft against the sample, and have counsel review reports in high-risk matters.
This article is general education, not legal advice. To practice report writing in a structured program, see the Internal Investigations Certificate Program. For quick reference, use the Workplace Investigations Checklist and the Glossary of Workplace Investigation Terms.
