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An honest day's work? Here's a list of the top 10 lies and deceptions employees tell their employers, according to Smart Money

"I'm not really sick..."
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The number of Americans taking fake sick days is increasing, according to surveys by the Workforce Institute at Kronos, a company that helps businesses automatically track absenteeism and employee time use. From 2006 to 2010, the number of American workers who said they told their employer they were sick when they weren't grew by 18 percent. In 2011, 52 percent of American workers admitted to playing hooky.

"I'm just sick of working so hard."
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Aside from going to the zoo or a sporting event, 62 percent of American hooky players said they stayed home because of stress and they needed a day off. HR experts say the best way for employers to stop fake sick days is better communication with employees.

"I'm too busy...Updating my Facebook."
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The majority of workers waste at least a little company time, seeing as how 64 percent of workers said they visit non-work-related websites every day in a new survey by Salary.com. Most workers admit they goof off, but not for long. About 39 percent of workers said they spend an average of an hour or less on personal web browsing each week. And 29 percent said they waste up to two hours a week on personal browsing.

"I'm applying for other jobs."

Employers may not expect to hear that happy employers still look for another job while they're at work. In a separate Salary.com survey, 56% of workers said they planned to find a new job at some point in 2012. In fact, 46 percent of workers said they have spent time looking for a job while at work.

"My resume may have white lies."
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A majority of employers have discovered resume fallacies, including everything from inaccurate previous employment dates to inflated salaries, according to the Society for Human Resource Management.

"I'm starting my own side business."
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Approximately 33 percent of freelancers have a full-time job, according to the most recent Freelance Talent Report from Elance. In a different survey of entrepreneurs, 36 percent of respondents said they were starting a business while they were working full-time somewhere else. Most employees don't ask for permission because that's like telling their boss they've got other priorities, career coach Ceniza-Levine told SmartMoney.

"My bad mood is costing the company money."
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Employees who go into work with a bad mood have a 10 percent drop in their productivity, according to research by Nancy Rothbard, an associate professor of management at the Wharton School of the University of Pennsylvania. People typically aren't aware their bad moods make them less productive, Rothband told SmartMoney. When a worker is in a bad mood, managers should not comment on the situation because it will only make matters worse.

"I want you to be my psychiatrist."
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A lot of personal and financial problems have a big impact on a worker's productivity, Mitchell Weiss, a former small business owner, told SmartMoney. The danger is that some employees will try to take advantage of their managers. Knowing Weiss had was going to give him a poor review, the employee said his wife had just been diagnosed with cancer and asked that the meeting be postponed. The employee continued to tell Weiss about his financial problems. Weiss eventually let him go. Years later, Weiss saw him and the former employee admitted he had made up all of the tragedies.

"I don't want you as my friend."
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Managers might want to be viewed as just another member of the team, but workers are always aware they're talking to their boss and not their peer, experts say. This means managers shouldn't "friend" their employees online because it will just make them feel uncomfortable. The boss that wants to be friends with everyone is a common problem.

"Money doesn't matter. Just be nice to me."
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When asked what makes them happy at their job, workers placed their relationship with their superiors as more important than pay or benefits, according to a 2011 survey by the Society for Human Resource Management. Overall, 55 percent said that relationship was really important to their job satisfaction, and 73 percent said it affects how engaged they are at their job. However, only 49 percent of workers said they were satisfied with that relationship.