We've all had that sinking feeling when a stoic colleague turns up to work coughing and sneezing.
And new research suggests it really is better if they stay at home, such is the speed that germs spread around an office.
Scientists at the University of Arizona have discovered when even one person comes to work sick, more than half of the commonly touched surfaces in the office will become infected with the virus by lunchtime.
Some of the likeliest germ hotpots include telephones, desktops, tabletops, doorknobs, photocopier and lift buttons and the office fridge.
However the study also revealed that simple interventions, such as hand washing and the use of hand sanitiser or wipes, can drastically reduce employees' risk of infection. Read more at the UK Daily Mail