Puny wage increases that have been chewed up by inflation have left hundreds of thousands of Bay Area workers worse off than they were 10 years ago.

But top wage earners have seen their paychecks soar by 26 percent over the same period when adjusted for inflation. That's widened the gap between those on the top and bottom of the workforce.

A decade ago, the average wages of those in the lowest income categories were 66 percent below the average pay of the workers perched on the highest rungs of the income ladder. But 10 years later, the divide has reached 73 percent.

"This speaks directly to the issue of income inequality that gets the 99 percent Occupy people so upset," said Jon Haveman, chief economist of the Bay Area Council Economic Institute.