The Randstad Employee Confidence Index dipped only slightly in August, to 51.6 from July’s 52.2. The overall index remains 10 point higher than August 2011 levels. The index measures workers’ confidence in their personal employment situation and optimism in the economic environment.

“While we saw a slight decline in the overall index, the movement is minimal, and worker confidence in the strength of the economy and job availability continues to remain strong,” said Jim Link, managing director of Human Resources for Randstad U.S.

“When you look specifically at this time last year, we see that U.S. employees are reporting much higher levels of confidence — double digit increases, in fact, when it comes to the economy,” Link said. “As we head towards the fourth quarter and the November election, we expect to see more of the same when it comes to U.S. job growth. Growth will likely still occur, just at a slower pace than many had hoped to see in the remaining few months of the year. That said, healthcare, education and professional services are likely to remain some of the strongest sectors.”

The index is based on an online survey conducted by Harris Interactive on behalf of Randstad. It surveyed 1,111 employed U.S. adults. The survey took place between Aug. 14 and 16.