The Best Ways to Call in Sick

Updated July 2026

Why Calling in Sick Is a Professional Duty, Not a Flaw

Illness happens. Even the most diligent employees catch colds, flu, or stomach bugs. The real problem isn’t being sick, it’s not managing it properly. A 2011 study by the American Productivity Audit found that presenteeism, working while ill, cost U.S. businesses $150 billion annually due to lost productivity and spread of infection. That’s more than double the cost of absenteeism.

When you’re sick, your focus wanes. Decision-making slows. Errors increase. At a minimum, you’re less effective. At worst, you’re spreading illness to coworkers. The CDC reports that influenza spreads easily in office environments, with transmission rates rising 20–30% in close-proximity workspaces. Calling in isn’t avoidance, it’s responsibility.

Employees at companies like Microsoft and Google are encouraged to take sick days without penalty. These firms recognize that healthy employees are more productive. They’ve built cultures where taking time off is normalized.

Here’s the arithmetic worth doing before you push through a fever at your desk. Say you earn a typical U.S. hourly wage. Median hourly earnings sat close to $16.50 in 2012 according to BLS wage and leave data. An eight-hour paid sick day costs your employer roughly $132 in wages paid for zero output if you stay in bed, versus a full workday of reduced output if you show up sick. Research on presenteeism suggests illness-impaired work can cut productivity by a third or more on a bad day, meaning a “free” day at your desk while sick may only return the value of five or six lost hours, plus whatever it costs in sick days taken later by coworkers you infect. Staying home is usually the cheaper option for everyone, even though it doesn’t feel that way when you’re staring at an inbox.

How to Call in Sick: The Step-by-Step Process

Timing matters. Call your manager before 9 a.m. If you wait until noon, you’re seen as unreliable. The Bureau of Labor Statistics reports that 87% of employers expect notification by 8 a.m. for sick days. That window gives HR and supervisors time to reassign tasks.

Use the fastest method. If you can’t reach your manager by phone, send a text. Texts have a 98% open rate within 10 minutes, according to Statista’s 2012 data. A quick message like “I’m sick, can’t come in today” works better than a voicemail that may go unheard.

If your company uses internal tools like Slack or Microsoft Teams, send a message through those platforms. At firms such as ING and Schneider Electric, digital notification is standard. Always check your employee handbook, since some companies require email or HR portal submissions.

When you contact your manager, keep it brief. Avoid over-explaining. Say: “I’m not feeling well and need to stay home today. I’ll check in later if needed.” No need to share symptoms. That’s personal. The only thing they need to know is that you’re not fit to work.

Follow up later. If you’re still unwell, message again. If you’re back by Friday, send a quick update: “Back in the office Monday.” This maintains trust. Employees who communicate clearly are seen as more dependable.

What Not to Do: The Pitfalls of Poor Sick-Call Practices

Don’t lie. Don’t say you’re “feeling under the weather” when you’re actually at a concert. CPSC data shows that 37% of workplace violations in 2011 involved falsified sick leave. These cases often lead to termination. Companies like JPMorgan Chase and Amazon have strict policies on absenteeism abuse.

Don’t wait too long. Delaying notification is worse than not calling at all. A 2012 Bureau of Labor Statistics report found that 72% of managers view late calls as a sign of disorganization. If you wait until 11 a.m. to say you’re sick, you’re seen as careless.

Don’t over-apologize. Phrases like “I’m so sorry, I know I’m missing work” sound unprofessional. Confidence matters. A simple “I’m staying home today to recover” is enough. Over-apologizing can signal guilt, even when you’re not doing anything wrong.

Don’t use sick days for non-illness reasons. Using a sick day to run errands or attend a doctor’s appointment without a note is misuse. The U.S. Department of Labor warns that such practices degrade workplace trust. If you need time off for personal matters, use vacation or personal days instead.

When Documentation Is Required: The Employer Side

Some employers require a doctor’s note. The Equal Employment Opportunity Commission allows employers to request medical certification for extended absences, typically beyond three consecutive days. But they must follow 14 CFR Part 121 guidelines, which protect employee privacy.

For short-term absences (one to two days), most employers don’t need proof. According to a 2012 BLS report on workplace leave policies, 68% of firms allow employees to take sick days without documentation. This includes companies like Chevron and Abbott Laboratories.

If your company does require a note, get it from a licensed practitioner. Use your FDIC or Federal Reserve-regulated health provider. Avoid online “doctor” sites that offer instant notes without a visit. Many HR departments reject these.

Keep copies. Store your doctor’s note in your personal file. Some companies, like Cigna, store documentation for up to two years. If you’re audited, you’ll need proof.

One honest caveat here: none of this advice about skipping documentation applies if you work hourly without paid sick leave, or if your employer’s handbook explicitly requires a note for any absence regardless of length. Roughly a third of firms in the BLS survey above still ask for something in writing even for a single day off, and ignoring that policy because “most companies don’t require it” can get you written up. Read your own handbook before assuming the general rule applies to you.

What to Do After You Call In

Stay off work. Don’t check emails or messages. Your body needs rest. The Centers for Disease Control and Prevention states that recovery time improves with full rest. Interrupting it reduces healing speed by up to 30%.

Communicate only if necessary. If a critical issue arises, send a brief update. “I’m recovering but will check email at 2 p.m.” That shows responsibility without over-committing.

Get back to work as soon as you’re able. If you’re back on Monday after a Friday call, you’re doing it right. Don’t use the weekend to “catch up.” That’s not the point. The point is to return rested and ready.

Be ready to re-engage. Once back, be alert. Show you’re committed. A 2012 Gallup study found that employees who took sick days and returned with focus were rated 22% higher in performance reviews than those who faked it.

How to Build a Culture Where Sick Days Are Respected

Employers can’t force employees to take time off. But they can create systems that encourage it. Sprint and Ingram Micro offer “no-questions-asked” sick leave policies. Employees can take up to five days a year without needing a note.

Managers should lead by example. If your boss calls in sick and shares it openly, others follow. At Intel, leaders are encouraged to disclose illness when necessary. This normalizes the behavior.

HR departments can track patterns. If one team member calls in too often, investigate, without blame. Is there a work-life imbalance? Are they overwhelmed? The Occupational Safety and Health Administration advises companies to assess workload, not just attendance.

Recognition helps. A simple “Thanks for taking care of yourself” in team meetings builds trust. At Ubisoft, managers send thank-you notes after employees return from sick leave.

Frequently Asked Questions

What is the best time to call in sick?

Call before 9 a.m. to give your manager time to reassign duties. 87% of employers expect notification by 8 a.m. according to the Bureau of Labor Statistics.

Do I need a doctor’s note to call in sick?

Only for absences longer than two days. EEOC rules allow employers to request medical certification after three consecutive days. For shorter absences, a simple message is enough.

Can my employer fire me for calling in sick?

Only if you lie, abuse the system, or miss too many days. The U.S. Department of Labor protects employees from retaliation for using authorized sick leave.

What if I can’t reach my manager?

Send a text first. If no response, email. Include “urgent” in the subject line. Texts have a 98% open rate within 10 minutes, per Statista.

How many sick days do most companies allow?

Most U.S. companies offer between 5 and 10 paid sick days annually. BLS data shows that 68% of firms grant 7 days per year.

Can I use sick days for mental health?

Yes. The Substance Abuse and Mental Health Services Administration recognizes mental health as legitimate illness. Many companies, including Uber and Sanofi, allow sick time for mental health.

Should I call in sick if I just have a headache?

If it’s mild and you can work, stay in. If it’s severe or affects your ability to focus, call in. Presenteeism costs employers $150 billion yearly, per American Productivity Audit.

What if my employer doesn’t have a sick leave policy?

Check your state law. Federal law doesn’t mandate sick leave, but 13 states and 12 cities do. New York City requires 40 hours annually.

Can I call in sick on a busy day?

Yes. Even during crunch time, your health matters. CDC data shows that sick employees spread illness faster in high-pressure environments.

What if I’m asked to work remotely while sick?

Only if you’re well enough. If you’re feverish or fatigued, rest. Remote work during illness can lead to burnout. The National Mental Health Association advises that recovery requires complete rest.