NEW YORK (CNN/Money) - U.S. workers cite hypocrisy and favoritism as the biggest ethical problems in the workplace, and are less committed to their places of employment than they were two years ago, a new study shows.

A survey of 1,700 U.S. workers found that while 72 percent believe their immediate bosses act with honesty and integrity, only 60 percent think the same of their co-workers, and 56 percent of their top managers, according to Watson Wyatt Worldwide, an international firm that consults on human capital issues.

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The study, released Monday, showed that 62 percent of employees that questioned top management's integrity cited hypocrisy and favoritism, while 8 percent pointed to dishonest financial dealings, and 2 percent alleged investor-related violations.

"While most employees do not believe there are concrete ethical breaches in the workplace, some clearly feel compromised by day-to-day hypocrisy and broken promises," Ilene Gochman, national practice leader of organizational management at Watson Wyatt, said in a release. "This might explain why job commitment is also down -- a problem for companies as the economy picks up and job prospects brighten."

Overall employee commitment levels have slipped since 2002, according to the survey, with the areas of pride in company, preference to remain with company, overall rating of company, and satisfaction with company slipping at least five percentage points each.

The study also showed that 30 percent of those surveyed would leave their companies if they could.

Watson Wyatt surveyed a random sample of 1, 200 employees from mid- and large-sized companies in the United States. The findings have a plus or minus 3 percent margin of error.