by By Lisa Grimaldi | October 01, 2009

Though the national unemployment rate in September reached nearly 10 percent, the majority of U.S. workers who do have jobs are unhappy, according to a survey of 1,117 full- and part-time employees.

Two-thirds of respondents to the American Workplace Insights Survey, conducted in late August by Harris Interactive for human resources firm Adecco Group North America, said they are not satisfied with their salaries. And more than three-quarters (78 percent) are unhappy with their firm's overall retention efforts.

Among other findings:

• More than three quarters (76 percent) are disappointed in future career growth opportunities at their company.

• Nearly half (48 percent) are dissatisfied with their relationship with their boss, though 59 percent are satisfied with the level of support they receive from colleagues.

• Seventy-seven percent are unhappy with the strategy and vision of the company.

• More than two-thirds (68 percent) are unhappy with their company's contribution to their retirement plans.

To prevent employee flight once the economy recovers, Adecco recommends that managers build trust and engagement via a number of measures, including:

• Sharing the realities of market business challenges with employees;

• Rewarding workers through an awards program or team contest, if salaries cannot be increased, and

• Mapping out a career growth plan for each individual employee.