If you are diligent about hand washing, going to work with mild sniffles, sneezing, or a cough is less risky for spreading germs to your colleagues. But you should stay at home if:
You have a fever You have a bad cough (frequent, loud, painful) that isn’t relieved by a cough suppressant You’re taking a cold medicine that makes you drowsy You’re just too tired or achy to function at work
Where you work and what you do are also factors, of course. If you need to be alert and physically active to work safely, stay at home if you’re not fully functioning or are taking a cold medicine that might make you drowsy (look at the drug facts on your medicine). If you work with infants, elderly people, or anyone with a compromised immune system, protect their health by staying at home until your cold symptoms have gone away.