New research from global staffing firm Accountemps says that 90% of professionals admitted they've at least sometimes come to the office with cold or flu symptoms. Of those respondents, 33% always go to work even when they're under the weather. Among the 28 U.S. cities in the study, Charlotte, Miami (96% each), Austin, Chicago and Cincinnati (93% each) had the most employees who show up while feeling ill.

More than half of those who report to the office with a cold or the flu (54%) said they do so because they have too much work on their plate; another 40% don't want to use sick time.

Additional findings from the survey, include:

• New York (67%), Minneapolis (66%) and Miami (64%) had the most respondents who report to the office while ill because of an overwhelming workload.
• Phoenix, San Diego (48% each) and Miami (47%) professionals feel the most pressure from their boss to be present when sick.
• More employees ages 25 to 40 (39%) reported always coming to work unwell than respondents ages 18 to 24, 55 and older (27% each) and ages 41 to 54 (26%).