The symptoms you should report to your manager fall into a few distinct categories: signs of contagious illness that could spread to coworkers, symptoms caused by workplace conditions or exposures, and health issues that affect your ability to do your job safely. You don’t need to share every detail of your medical history, and the law actually limits what your employer can ask. But certain situations call for prompt reporting to protect both you and the people around you.
Contagious Illness Symptoms
If you’re experiencing symptoms of an infectious illness, letting your manager know serves a straightforward purpose: preventing an outbreak. This applies across industries but is especially critical in healthcare, food service, childcare, and any role involving close contact with vulnerable people. The CDC recommends that workplaces create systems that actively encourage employees to report infectious symptoms without fear of retaliation, specifically to discourage “presenteeism,” the practice of showing up sick because you feel pressured to.
Symptoms worth reporting include fever, persistent cough, vomiting, diarrhea, and unusual rashes. You don’t necessarily need to tell your manager what you think the diagnosis is. Saying “I have a fever and I’m vomiting” is enough. The goal is to give your supervisor the information needed to decide whether you should stay home or be temporarily reassigned, not to hand over your full medical chart.
Symptoms From Workplace Exposures
Any symptom you believe was caused by something at work should be reported immediately. This includes chemical exposures, injuries, and environmental hazards. Reporting creates a legal record that protects you if you need workers’ compensation or medical treatment later.
Needlesticks and Blood Exposure
In healthcare and laboratory settings, needlestick injuries and contact with a patient’s blood or body fluids require immediate reporting. This includes blood splashing into your eyes, nose, or mouth, or contacting broken skin. The CDC’s protocol is clear: wash the wound with soap and water (or flush eyes and mucous membranes with clean water), report the incident to your supervisor, and seek a medical evaluation right away. Delaying this report can compromise the window for preventive treatment against bloodborne infections.
Heat-Related Symptoms
If you work outdoors, in kitchens, warehouses, or any hot environment, OSHA and NIOSH instruct workers to report heat illness symptoms in themselves and in coworkers immediately. Early signs of heat exhaustion include headache, nausea, dizziness, weakness, irritability, heavy sweating, and decreased urine output. These can escalate quickly. Heat stroke, which is a medical emergency, involves confusion, loss of consciousness, seizures, and very high body temperature. Muscle cramps and clusters of small blisters on the neck, chest, or skin folds are milder heat-related symptoms but still worth flagging so your supervisor can adjust your workload or move you to a cooler area.
The key principle here is that symptoms triggered by work conditions are always reportable, because your employer has a legal obligation to provide a safe environment and can only fix problems they know about.
Symptoms That Affect Your Ability to Work Safely
If a health issue, whether new or ongoing, is making it difficult or dangerous for you to perform your job duties, reporting it protects you and your coworkers. This is especially important in roles where impairment creates physical risk: operating machinery, driving, working at heights, or handling hazardous materials. Dizziness, blurred vision, severe fatigue, tremors, or sudden pain that limits your movement all fall into this category.
You don’t need to provide a full diagnosis. Focus on the functional limitation. For example, “I’m having episodes of dizziness that make it unsafe for me to operate the forklift today” gives your manager what they need without disclosing more than necessary.
Mental Health Symptoms and Accommodations
Mental health symptoms are different from the categories above because reporting them is usually voluntary and driven by your own needs rather than safety obligations. The main reason to disclose mental health symptoms to your manager is to request a workplace accommodation, like a schedule change, a quieter workspace, modified deadlines, or permission to attend appointments.
The EEOC makes this process simpler than many people expect. You don’t need to use legal terminology or mention the Americans with Disabilities Act. You can simply say, in conversation, that you need a change at work because of a health condition. You can request an accommodation at any point during your employment, not just when you’re first hired. A family member, friend, or healthcare provider can even make the request on your behalf if that feels easier.
When the need for accommodation isn’t obvious, your employer can ask for reasonable documentation confirming that you have a covered condition and that it creates functional limitations. But they’re only entitled to information about what you need to do your job effectively. They can’t demand a full psychiatric history or details beyond what’s relevant to the specific accommodation.
What You’re Not Required to Disclose
Federal law puts real limits on what your employer can ask about your health. Under the ADA, your employer cannot require a medical examination or ask about the nature and severity of a disability unless the inquiry is “job-related and consistent with business necessity.” That standard requires objective evidence that your condition is impairing your ability to do essential job functions or creating a direct threat. General curiosity or vague concerns don’t meet that bar.
These protections apply to every employee, not just those with diagnosed disabilities. Any worker can challenge a medical inquiry that isn’t tied to a legitimate business need.
When you do share medical information, your employer must keep it confidential. That information has to be stored separately from your regular personnel file, and only people with a direct business reason, like a manager who needs to understand your work restrictions to arrange an accommodation, should have access to it. Your manager knowing you need a modified schedule is appropriate. Your manager sharing details of your condition with the rest of the team is not.
How to Report Effectively
When reporting symptoms, stick to what’s relevant. Describe what you’re experiencing in plain terms, explain how it affects your ability to work, and state what you need. You don’t owe anyone a detailed medical narrative. A few practical guidelines:
- For contagious symptoms: Tell your manager what symptoms you have and that you may be contagious. Let them determine next steps for coverage or leave.
- For workplace injuries or exposures: Report as soon as possible, even if the symptoms seem minor. Document the time, location, and circumstances. Some conditions, like infections from blood exposure, have narrow treatment windows.
- For safety-related impairment: Focus on the functional impact. Name the task you can’t safely perform and why, without feeling obligated to explain the underlying condition.
- For accommodation requests: Start the conversation informally. Say you need a change at work for a health reason. Your employer will guide you through their process from there.
If your workplace doesn’t have a clear reporting system, put your report in writing, even a simple email, so there’s a record. This protects you if questions come up later about when the issue was first raised and what steps were taken.