What Should I Do When an Employee Files a Complaint?

When an employee brings you a complaint, you do not need to decide on the spot whether the employee is right. You do need to respond.

Listen before you explain. Get enough information to understand what the employee is reporting. Document what you received. Then determine what kind of issue you may be dealing with, whether anyone needs immediate protection, who should handle the matter and how much review the situation actually requires.

That last part matters.

Not every complaint requires a formal workplace investigation. But every complaint deserves enough attention for you to make that decision intentionally.

One of the biggest mistakes an employer can make is jumping from:

“An employee complained”

straight to:

“Here's what we're going to do about it.”

There is an important step in between:

“What exactly happened here?”

That is where good complaint handling begins.

First, Figure Out What Kind of Complaint You Actually Have

“Employee complaint” sounds like one HR issue.

It isn't.

An employee may tell you:

• a supervisor keeps making inappropriate comments;

• a coworker treats them differently because of a protected characteristic;

• their paycheck or overtime looks wrong;

• they believe a manager retaliated against them after they raised a concern;

• they don't feel safe performing a task;

• their manager constantly humiliates them in front of coworkers;

• another employee threatened them;

• their supervisor applies rules differently to different employees;

• the company denied or mishandled leave or an accommodation;

• several employees have concerns about scheduling, pay or working conditions;

• a manager violated company policy; or

• they simply believe a workplace decision was unfair.

Those situations do not all require the same response.

Some involve employee relations. Some involve company policy. Some may trigger obligations under federal, state or local law—including protections that can apply when employees act together regarding pay, scheduling or other working conditions, even in a nonunion workplace. Some may require a formal investigation. Others may require a payroll correction, management coaching, a policy review or a conversation.

Your first job is to classify the problem before you try to solve it.

Don't Wait for the Employee to Use the “Right” Words

Employees rarely walk into an office and say:

“I would like to make a legally protected complaint.”

They say things like:

“My supervisor treats me differently.”

“I think I'm missing overtime.”

“The guys keep making comments.”

“Ever since I complained, my manager has been coming after me.”

“We all think this schedule is unfair.”

“I don't feel safe doing this.”

The employee may not know whether the situation involves discrimination, retaliation, wage-and-hour requirements, safety rules, protected group activity or simply poor management.

You shouldn't expect them to diagnose it for you.

Listen to the substance of what the employee reports, not just the terminology they use.

Before you ask:

“Do I believe this employee?”

ask:

“What exactly is this employee telling me, and what could this involve?”

That question will usually lead you to a better next step.

The HR Remedy Approach: Five Steps for Handling an Employee Complaint

1. Identify the Issue

Start by listening.

Resist the urge to defend the manager, explain the policy, correct the employee's assumptions or offer a solution before you understand the concern.

You don't need an interrogation. You need enough information to understand what happened and determine what should happen next.

Ask questions such as:

• What happened?

• Who was involved?

• When did it happen?

• Where did it happen?

• Has this happened before?

• Who else may have seen, heard or known about it?

• Do you have emails, texts, messages, photographs, schedules, time records or other information related to it?

• Have you reported this before?

• If so, who did you tell?

• What happened after you reported it?

• Is anything happening right now that concerns you?

• What would you like us to understand about the situation?

Then ask one of our favorite closing questions:

“Is there anything else you think I should know that I haven't asked you about?”

It sounds simple, but it creates space for information that your questions may not have uncovered.

Document the Complaint—Even When the Employee Doesn't

Do not assume the employee must submit a written complaint before the company can act.

If an employee reports a concern verbally, document:

• when the employee reported it;

• who received the complaint;

• what the employee said;

• the people involved;

• any immediate concerns;

• any records or witnesses the employee identified; and

• what you told the employee would happen next.

Whenever possible, separate what the employee actually reported from your own interpretation.

For example:

Better:“Employee stated that Supervisor Smith told her on October 10, ‘Women don't usually last long in this department.’”

Less useful:“Employee complained that her supervisor is sexist.”

The first version preserves the information someone may need later. The second version gives us a conclusion without showing how we reached it.

That distinction becomes especially important when another HR professional, investigator, attorney or agency later needs to understand what happened.

2. Protect the Process

Once you understand the basic complaint, ask:

Does anything need to happen right now?

You may need to protect an employee, preserve evidence, stop ongoing behavior or prevent people from interfering with the review.

But don't confuse an interim step with a final decision.

An allegation is not a finding.

The employee who raised the concern should not face punishment simply for raising it, and you should not automatically treat the person accused as guilty before you establish the facts.

Depending on the circumstances, you might:

• temporarily change reporting relationships;

• adjust schedules;

• limit unnecessary interaction between employees;

• instruct employees not to interfere with the review;

• preserve emails, messages, video or other relevant records;

• place someone on appropriate non-disciplinary leave when circumstances warrant it; or

• make another temporary operational adjustment.

Be Careful About “Solving” the Problem by Moving the Employee Who Complained

Imagine an employee complains about a supervisor.

The easiest operational solution may seem obvious:

Move the employee to another shift.

But what if that shift pays less?

What if it interferes with childcare?

What if the employee loses overtime opportunities?

What if the new assignment is less desirable?

You may have solved your scheduling problem while creating a new problem for the employee who raised the concern.

Instead ask:

“What is the least disruptive way to protect the people and the process without prematurely punishing anyone?”

That question forces you to consider the impact of your decision—not just its convenience.

Address Retaliation Before It Becomes the Next Complaint

When the situation involves potentially protected activity, explain your anti-retaliation expectations to the people who need to know.

Don't wait for retaliation to happen.

And don't think only about termination.

Depending on the circumstances, retaliation concerns can arise from actions such as:

• suddenly reducing hours;

• changing schedules;

• assigning undesirable work;

• excluding someone from meetings or opportunities;

• increasing scrutiny without a legitimate reason;

• threatening the employee;

• creating new obstacles to doing the job; or

• treating the employee differently after the complaint.

At the same time, a complaint does not make an employee immune from legitimate performance management.

If you already had a documented attendance problem, performance issue or disciplinary process underway, you may still need to address it.

The key question becomes:

Can you clearly show why you took the employment action—and that you would have made the same decision regardless of the complaint?

That is where documentation and consistency become especially important.

3. Establish the Facts

Now decide what level of review the complaint needs.

This is where many employers automatically say:

“We need to investigate.”

Maybe.

But first ask:

What do we actually need to determine?

A payroll discrepancy may require reviewing timecards and payroll records.

A disagreement about a policy may require reviewing the policy, previous decisions and how managers applied it.

A scheduling concern may require looking at schedules and talking with the manager.

A complaint involving harassment, discrimination, retaliation, threats, serious misconduct or significantly disputed facts may require a formal workplace investigation.

Match the process to the problem.

You don't want to underreact to a serious allegation.

You also don't need to turn every employee disagreement into a three-week corporate investigation.

When You Do Investigate, Decide Who Can Be Impartial

Before assigning the investigation, ask:

“Can this person investigate the complaint fairly—and will employees reasonably see the process as fair?”

Those are not always the same question.

Suppose an employee complains about the HR manager.

The HR manager may know company policy better than anyone.

That does not make the HR manager the right investigator.

The same concern can arise when the complaint involves:

• an owner;

• a senior executive;

• the investigator's direct supervisor;

• a close friend or family member;

• someone who already made decisions about the situation; or

• anyone whose credibility may become part of the investigation.

Sometimes the right HR decision is recognizing that the person who normally handles employee problems should not handle this one.

That's one reason growing companies sometimes bring in an outside HR professional or investigator—not because the company did something wrong, but because independence matters.

Gather Evidence, Not Just Opinions

A good investigation goes beyond:

Employee A says it happened.

Employee B says it didn't.

No one else saw it.

Case closed.

Look for information that may confirm, contradict or provide context for what people tell you.

That can include:

• firsthand witness accounts;

• emails;

• text messages;

• Slack or Teams messages;

• schedules;

• time records;

• payroll records;

• performance documentation;

• disciplinary records;

• photographs;

• video where lawfully available;

• relevant policies;

• previous complaints;

• calendar entries;

• access records;

• documents created before the complaint arose; and

• other records that relate to the disputed facts.

One detail that employers often overlook:

Look at the Timeline

A timeline can tell you things that separate interviews do not.

For example:

• When did the alleged conduct occur?

• When did the employee first complain?

• When did the manager learn about the complaint?

• When did the employee's schedule change?

• When did discipline begin?

• When did performance concerns first appear in writing?

Put those events in chronological order.

Sometimes the sequence reveals an issue that no single document does.

“There Were No Witnesses” Does Not Mean Nothing Happened

Many workplace incidents happen when no one else is standing nearby.

If two employees give conflicting accounts, evaluate the available information rather than simply counting witnesses.

Consider:

• Does the person's account remain consistent?

• Does it make sense given the surrounding facts?

• Do documents support parts of the account?

• Did the person tell anyone about the incident near the time it happened?

• Does either person have a reason to misrepresent what happened?

• Do records contradict important details?

• Have similar concerns arisen before?

You do not need to prove a criminal case.

You need enough reliable information to make a fair and supportable workplace decision under the company's policies and applicable requirements.

Don't Promise Complete Confidentiality

An employee may say:

“I'll tell you, but you can't tell anyone.”

Don't respond:

“I promise.”

You may need to speak with witnesses, the person accused, HR, leadership or legal counsel.

Instead, say something like:

“We'll limit the information to people who need it so we can review and respond appropriately, but I can't promise complete confidentiality.”

That protects the employee's privacy as much as reasonably possible without making a promise you may not be able to keep.

4. Decide What the Facts Mean

Gathering information is not the end of the process.

Someone must make a decision.

Ask:

What did we determine?

Then:

What needs to happen because of it?

Depending on the facts, policy, severity of the issue and the company's past practices, you might:

• take no corrective action because the evidence did not support the allegation;

• clarify expectations;

• coach a manager or employee;

• provide training;

• facilitate a conversation when appropriate;

• issue discipline;

• correct a payroll or scheduling problem;

• restore something the employee lost;

• change a process;

• revise a policy;

• change a reporting relationship;

• take stronger disciplinary action; or

• terminate employment.

The response should address the actual problem you found, not simply the label attached to the original complaint.

An Unsubstantiated Complaint Can Still Reveal a Real Problem

This is an important distinction.

Suppose an employee claims that a manager discriminated against them.

After reviewing the evidence, you cannot substantiate the discrimination allegation.

But during the review you discover that the manager:

• documents performance inconsistently;

• applies attendance rules differently across the team;

• gives employees conflicting instructions;

• skips required disciplinary steps; or

• communicates in a way that repeatedly creates unnecessary conflict.

You now have two separate questions:

Did the evidence support the discrimination allegation?

and

Did the review uncover another management problem that the company should address?

The answer to the first question may be no.

The answer to the second may be yes.

Do not force every fact you uncover into a simple substantiated/unsubstantiated box.

Address the workplace problems you actually find.

5. Follow Through

Closing the investigation does not automatically close the issue.

Tell the employee that you completed the review.

You generally do not need to share another employee's confidential personnel information or provide every detail of the corrective action.

But don't leave the employee wondering whether anyone ever looked into the concern.

Depending on the situation, you can explain that:

• the company reviewed the concern;

• the review has concluded;

• the company took appropriate action where warranted;

• the company prohibits retaliation; and

• the employee should report additional concerns.

Document that conversation.

Then consider whether you need to check back later.

For higher-risk complaints, a simple follow-up can provide valuable information:

“How have things been since we last spoke?”

“Have you experienced any problems since raising the concern?”

“Has the behavior we discussed continued?”

That follow-up can reveal retaliation, continued misconduct or an operational issue before someone files another complaint.

Six Mistakes That Can Turn One Employee Complaint Into a Bigger Problem

1. Deciding the Employee Is “Just Difficult”

A difficult personality does not make a complaint invalid.

Separate what you think about the employee from what the employee reported.

2. Defending the Manager Before You Know the Facts

Statements like:

“I've known her for ten years. She would never do that.”

tell the employee you've already reached a conclusion.

Listen first.

3. Asking Someone to Investigate Their Own Conduct

The person whose decisions or behavior are at issue should not control the process used to determine what happened.

4. Promising Complete Confidentiality

Protect privacy. Limit unnecessary disclosure. But don't promise something the company may need to break to conduct a fair review.

5. Moving the Employee Who Complained Because It's Easier

Consider how any interim change affects the employee before you make it.

Operational convenience should not automatically decide who bears the disruption.

6. Waiting for a Written Complaint

Employees don't always put concerns in writing.

When someone tells a manager about a potentially serious workplace issue, the manager cannot necessarily ignore it because the employee did not complete a form or email HR.

That is also why manager training matters.

Your managers need to know which employee concerns they can handle themselves and which ones they need to escalate.

What Should a Manager Say When an Employee Complains?

This is where many well-intentioned managers create problems.

They try to investigate immediately.

They promise confidentiality.

They tell the employee what they think happened.

Or they say:

“Why don't you two work it out?”

Instead, give managers a simple response they can actually remember:

“Thank you for telling me. I want to make sure we handle this appropriately. I'm going to document what you've shared and connect with the appropriate person so we can determine the next step. I may need to ask you some additional questions.”

Then the manager should escalate the concern according to your process.

A good complaint procedure depends on more than having a policy in the handbook.

The people who receive complaints have to know what to do when one actually arrives.

When Should You Bring in Outside HR or Legal Counsel?

You do not need outside help every time an employee complains.

But there are situations where getting another set of experienced eyes before you act can save you from having to undo a decision later.

Consider outside HR or legal guidance when:

• the employee alleges discrimination, harassment or retaliation;

• the complaint involves an owner, executive, HR leader or other senior decision-maker;

• you are considering termination or significant discipline while the employee has a pending or recent protected complaint;

• the issue may involve wage-and-hour, safety, leave, accommodation or whistleblower concerns;

• several employees raise the same concern;

• the facts are highly disputed;

• the complaint involves employees in multiple states;

• an attorney, government agency or formal charge is already involved;

• you do not have anyone internally who can investigate impartially;

• the situation could significantly affect the business or employees involved; or

• you simply aren't confident that you know what rules apply.

You don't necessarily need someone to take the entire matter away from you.

Sometimes you need help answering one question:

“What should we do next?”

Other times you may need someone to review your process, help frame the investigation, conduct interviews, evaluate documentation or handle the investigation independently.

The right level of support depends on the situation.

Before You Close the File, Ask One Final Question

Imagine someone who knows nothing about this situation opens your file six months from now.

Could that person understand:

• what the employee reported;

• when the company learned about it;

• what you did in response;

• who you spoke with;

• what evidence you considered;

• how you reached your conclusion;

• what action you took; and

• what happened afterward?

If not, you may not be finished.

Good complaint handling does not mean creating the thickest investigation file.

It means creating a process you can explain.

What did the employee tell us?

What did we do about it?

What did we learn?

Why did we make the decision we made?

What did we do next?

If you can answer those questions clearly, you are much more likely to have a process that is fair, consistent and defensible.

The Bottom Line

When an employee files a complaint, don't rush to decide who's right.

Identify the issue. Protect the process. Establish the facts. Make a decision. Follow through.

And recognize when the situation has moved beyond what you should handle alone.

You don't need to know whether you need an investigation, employee-relations support, compliance guidance or legal counsel before you ask for help.

Sometimes the best place to start is simply:

“Here's what happened. What should we do next?”

That's a question The HR Remedy can help you answer.

Important Note

HR Answers provides general educational information and is not legal advice. Employment laws and requirements can vary by jurisdiction and individual circumstances. When appropriate, consult qualified HR or legal counsel regarding your specific situation.