Several accountants told CNBC.com it was very hard to get vacation time approved by their bosses in March, so they had to resort to using sick days. March is the least likely month for an accountant to get paid time off. On average, 44 percent of accounting professionals take any non-sick time in March, compared to an average of 54 percent the other months of the year.
Employees in other corporate departments — Replicon looked at human resources, marketing and sales — were unlikely to take paid time off in March, but time off for sickness was average. Managers need to be aware of their employees' busy seasons to manage effectively. And it's most likely not just accountants.
"There are other industries that have peak seasons," Rajaraman said."I would imagine if we dig into this for retail, we might see the same thing in December."
There are 1.3 million accountants and auditors in the U.S., according to the Bureau of Labor Statistics. The occupation has a good outlook too, and is projected to grow by 11 percent in the next decade.