More than three-quarters of workers under the Transportation Security Administration's pay-for-performance plan soon will receive a performance-related raise, according to an internal report. But federal employee unions are claiming TSA's method of determining the pay hikes was arbitrary and confusing.

Seventy-six percent of employees under the agency's Performance Accountability and Standards System will receive pay boosts or bonuses, based on the quality of their work in 2009, the report said.
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According to the report, about 17 percent of employees fell into the top performance category in 2009, earning a 4 percent boost to their base salary and a $2,500 bonus. About 32 percent were in the next tier and will receive a 2 percent raise and a $1,500 bonus. Twenty-seven percent will receive a 1 percent raise and $1,000 bonus, and nearly 24 percent will receive only a $500 bonus. A small portion (0.02 percent) of employees will not receive any raise or bonus other than the cost-of-living increase, which everyone will get.