Co-Worker Harassment in San Diego: When Is Your Employer Legally Responsible?

By Eugene Bruno on February 3, 2026

Many employees assume harassment claims only apply when misconduct comes from a supervisor. But some of the most harmful workplace behavior is actually caused by peers. Under California law, employers can be held liable for co-worker harassment. 

If you are dealing with harassment from a colleague, California’s Fair Employment and Housing Act (FEHA) provides strong protections. In these cases, employer liability depends on what they knew, how they responded, and whether they took meaningful action.

The San Diego harassment attorneys at Eugene Bruno & Associates can inform you of your rights, represent you in employment disputes, and file a claim or lawsuit seeking compensation if you have suffered damages due to workplace harassment.

What Qualifies as Co-Worker Harassment?

FEHA stands for the Fair Employment and Housing Act, which is a California state law that protects employees from discrimination, harassment, and retaliation in the workplace.

Under FEHA, it is illegal for employers to allow or engage in misconduct based on protected characteristics such as:

• Race or ethnicity
• Gender or gender identity
• Sexual orientation
• Religion
• Disability
• Age

The law requires employers to take reasonable steps to prevent and correct harassment, including situations involving co-workers.

To rise to the level of a legal claim, the behavior must be:

• Severe or pervasive
• Interfering with your ability to do your job
• Creating an intimidating, hostile, or offensive work environment

Examples of Co-Worker Harassment

Co-worker harassment can take many forms, and it is not always obvious at first. In many cases, the behavior becomes unlawful when it is repeated or severe enough to affect your ability to do your job.

Recognizing these patterns is key to protecting your rights and taking the appropriate action. Examples of co-worker harassment may include:

• Repeated offensive jokes or slurs
• Inappropriate comments or messages
• Physical intimidation or unwanted contact
• Sharing offensive images or content
• Persistent bullying tied to a protected characteristic

When Is an Employer Liable for Co-Worker Harassment?

Under California law, employers may be liable for co-worker harassment if they:

1. Knew or should have known about the harassment
2. Failed to take immediate and appropriate corrective action

This is known as a negligence standard.

What Does “Knew or Should Have Known” Mean?

Employers do not have to witness harassment directly to be responsible. They may be considered aware if:

• You reported the behavior to HR or management
• A supervisor observed the conduct
• The behavior was widespread or obvious
• Other employees made similar complaints

What Counts as “Appropriate Corrective Action”?

Once an employer becomes aware of harassment, they must act quickly and effectively. Appropriate corrective action may include:

• Prompt investigation of the complaint
• Interviewing witnesses
• Taking disciplinary action against the offender
• Implementing measures to prevent further harassment

Simply acknowledging the complaint is not enough. The response must be reasonably calculated to stop the behavior.

Why Documentation Matters in Harassment Claims

Documentation is essential when proving employer liability. You will want to collect strong evidence that shows:

• When the harassment occurred
• When and how you reported it
• How the employer responded (or failed to respond)
• Whether the behavior continued

What to Document

Specific evidence is critical in establishing employer liability in co-worker harassment, so it is important to include the following information when possible:

• Dates, times, and details of incidents
• Names of individuals involved
• Copies of emails, messages, or reports
• Notes from meetings with HR
• Witness statements

The Importance of Reporting Workplace Harassment

Many employees hesitate to report harassment, but doing so is often necessary to trigger employer responsibility. You should report harassment through:

• HR departments
• Supervisors or managers
• Internal complaint systems

If your employer has a formal reporting process, follow it carefully. This creates a clear record that the employer was notified. Failure to report can make it more difficult to prove that the employer “knew or should have known.”

What If Your Employer Ignores Your Complaint?

If your employer fails to act, or their response is inadequate, you may have grounds for a legal claim. Signs of employer negligence include:

• Ignoring complaints
• Failing to investigate
• Retaliating against the reporting employee
• Allowing harassment to continue

Building a Strong Harassment Claim

To strengthen your claim, focus on these key elements:

1. Prove the Harassment Occurred. Use documentation, witness statements, and communications.
2. Show the Employer Knew or Should Have Known. Provide evidence of reports, complaints, or obvious conduct.
3. Demonstrate Inadequate Response. Highlight delays, lack of action, or ineffective measures.

Reasons to Choose Our Employment Law Firm

At Eugene Bruno & Associates, we understand how difficult it can be to navigate harassment in the workplace, especially when your employer fails to act.

Our legal team takes a hands-on approach, working closely with clients to build strong, well-documented claims. We are committed to holding employers accountable when they ignore their responsibilities.

We focus on:

• Establishing employer liability in co-worker harassment cases
• Building compelling documentation and timelines
• Navigating CRD complaints and legal proceedings
• Advocating for employees facing hostile work environments

Speak With a Trusted San Diego Harassment Attorney

No one should have to endure harassment at work, especially when their employer has the power to stop it. If you are experiencing harassment from a coworker and your employer is not taking it seriously, do not wait!

Call 1-888-BRUNO-88 (1-888-278-6688) for a free consultation today.

Co-Worker Harassment FAQs

Is my employer responsible for harassment by a coworker in California?

Yes, but only under certain conditions. Under FEHA harassment employer liability, an employer can be held responsible if they knew of or reasonably should have known about the harassment and failed to take immediate and appropriate corrective action.

What should I do if I am experiencing harassment from a coworker?

You should begin by reporting workplace harassment through your company’s internal channels, such as HR or a supervisor, as soon as possible. Reporting creates a record and puts your employer on notice, which is critical for establishing employer liability in California.

What qualifies as a hostile work environment under California law?

Under California law, a hostile work environment is severe or pervasive enough to interfere with your ability to work. This includes repeated offensive comments, intimidation, or other behavior tied to a protected characteristic like race, gender, or religion.

What happens if my employer investigates but does not stop the harassment?

If the employer’s response is ineffective and the harassment continues, they may still be liable. Under California law, employers must take action that is reasonably likely to stop the behavior.