Public Health & Workplace Wellness
There's a persistent workplace culture in the United States that treats coming to work sick as a sign of dedication. Pushing through a cold, showing up with a fever, toughing out the flu — these are often quietly admired rather than discouraged.
The science is clear on this: it's the wrong instinct. Not just for your own recovery, but for the health of everyone around you.
The influenza virus is contagious for approximately one day before symptoms appear and for five to seven days after. This means that by the time you feel sick, you may have already exposed others. And if you go to work anyway, you continue spreading the virus during the period when you're most infectious.
The common cold, caused by rhinoviruses and other pathogens, follows a similar pattern. You're typically most contagious in the first two to three days of symptoms — which also happens to be when many people feel "not that bad" and decide to push through.
Offices, warehouses, retail floors, restaurants, and other workplaces share several characteristics that make them particularly effective at spreading respiratory illness:
Research has shown that within four hours of a sick person arriving at an office, traces of virus can be found on commonly touched surfaces throughout the building — including in areas the sick person never visited.
A cold or flu that feels manageable to a healthy adult in their 30s can be genuinely dangerous for other people. When you come to work sick, you're not just risking your coworkers' productivity — you're potentially putting at risk:
These colleagues may not advertise their health status. You often can't tell by looking at someone whether a standard cold would mean a week off work for them or a hospitalization.
From a public health perspective: The decision to go to work sick is rarely just a personal one. It involves everyone you share space with — including people whose health vulnerabilities you may not be aware of.
Workplace health researchers have a term for going to work while sick: presenteeism. And the data consistently shows it is economically counterproductive — not just a public health issue.
When employees work while ill, their productivity drops significantly — estimates range from 30% to over 50% depending on the illness. They make more errors. They work more slowly. And they infect coworkers who then also become ill or work at reduced capacity.
Multiple large-scale studies have found that the productivity loss from presenteeism costs US employers significantly more than absenteeism. In other words, having a sick employee stay home for two days costs less — in real terms — than having them come in and infect three others who then each miss two days.
Guidelines from the CDC and most public health authorities recommend:
The challenge many people face is that they genuinely feel well enough to work before they are no longer contagious. The body often feels recovered before the immune system has finished its work.
One of the most common reasons people go to work sick despite knowing they shouldn't is simple practicality — they can't get a doctor's note without spending three hours in an urgent care waiting room, and they don't want to use a sick day without documentation.
This is a genuine barrier to doing the right thing from a public health standpoint. If getting proper documentation requires exposing yourself to a waiting room full of other patients, traveling while ill, and spending most of a workday doing so, many people will simply go to work instead.
Telehealth addresses this directly. A physician can evaluate your symptoms, confirm you have a genuine illness requiring rest, and issue documentation — all without you leaving your home or exposing anyone else to your illness. You stay home. You recover. Your workplace stays healthier.
A board-certified physician evaluates your symptoms and issues a signed work note — delivered to your email within 60 minutes. No waiting room. No travel. Available 24/7.
Get My Doctor's Note — $29 →The presenteeism problem is not just an individual behavior issue. Workplace culture and policy play a significant role. Employers who create environments where employees feel pressure to come in sick — through insufficient sick leave, attendance policies that penalize absences, or cultural expectations around "toughing it out" — bear some responsibility for the transmission that results.
The most effective workplaces for managing illness transmission share common policies:
Staying home when you're sick with a cold or flu is not a weakness or an inconvenience to your employer. It is the medically appropriate response to a contagious illness, and it is one of the most straightforward things an individual can do to protect the health of the people around them.
The barriers that prevent people from staying home — primarily documentation requirements and financial pressure — are solvable problems. Telehealth makes the documentation barrier easier than it has ever been. The rest is a matter of workplace culture catching up with what public health has known for a long time.
For flu, you are generally contagious until at least 24 hours after your fever resolves without medication. For a cold, the most contagious period is typically the first 2-3 days of symptoms, though you can remain contagious for up to a week.
From a public health standpoint, even a mild cold poses a transmission risk to coworkers — particularly those who are immunocompromised or otherwise vulnerable. The safest approach is to stay home during the most symptomatic days and return when symptoms are clearly improving.
A telehealth evaluation is the most practical solution — a physician can assess your symptoms and issue documentation without requiring you to travel or sit in a waiting room. This protects both your health and your employment documentation.
From a transmission standpoint, yes — remote work eliminates the risk of spreading illness to coworkers. However, rest is still important for recovery. Working from home while genuinely unwell may prolong your illness. If you are significantly symptomatic, rest is more beneficial than attempting to work remotely.
Medical Disclaimer: This article is for informational and public health education purposes only. It does not constitute medical advice. If you have concerns about your specific health situation, consult a licensed healthcare provider.