These are the 28 US cities where employees come to work sick most often - lead by New York, Miami, and Minneapolis

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There were 45 million cases of the flu last year alone.

• While experts advise staying home from work if you're feeling sick, 90% of professionals said they have come into the office when they're feeling under the weather, new data from staffing firm Accountemps found.
• There were 45 million cases of the flu last year alone and 61,000 flu-related deaths, according to the Centers for Disease Control and Prevention.
• The top reason why employees came to the office sick is workload. This is the most common in New York, Miami, and Minneapolis.
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Flu season is in full swing and overworked employees may be spreading the virus in the office.

Experts advise staying home when you're sick, but just because someone isn't feeling well doesn't mean they won't come into the office. Recent data from staffing firm Accountemps found that 90% of professionals have come into work with cold or flu symptoms. Accountemps surveyed 2,800 workers employed in office environments across 28 US cities.

Flu season usually peaks between December and February, but can last as late as May, according to the Centers for Disease Control and Prevention. There were 45 million cases of the flu and 61,000 flu-related deaths last year alone, CDC reported.

Employees in some cities are more likely to come to work sick - especially if they're overworked. The top reason employees came into work ill was having too much to do, the survey found. Workers were the most likely to come in sick because of workload in New York, Miami, and Minneapolis.

Business Insider broken down the 28 cities where employees come into work with cold and flu symptoms. Here they are in alphabetical order.