Last time Postal Workers received a COLA was September 19, 2008

In January, the Consumer Price Index (CPI-W) rose to 633.176, well below the July 2008 index of 644.303 (upon which the last COLA increase was based). The CPI-W must rise above 644.303 before another COLA is due. After the final month of the six-month measuring period, the seventh COLA under the 2006 National Agreement and the Operating Services Agreement which would have been effective March 13, 2010 (pay period 07-10, pay date April 2, 2010), will be zero

source: APWU