It's a problem called "present-eeism." And that's just a fancy word for workers who show up for work sick from colds, the flu, allergies, headaches and asthma. Sick employees have a hard time concentrating, work more slowly, and have to repeat tasks over and over until they finally get it right. And that bogs down productivity. In fact, working while you're sick costs your employer about $255 a year. And that doesn't include the cost if you infect everyone else and they get sick, too. In fact, so many workers come to work sick every year, it adds up to $180 billion dollars in lost productivity in the United States alone.
So, next time you feel crummy, don't be a hero and go to work anyway. Pick up that phone and call in sick. And if your boss isn't happy, remind him that you're actually saving the company money.