From the National Association of Letter Carriers:
COLAs total $1,227 annually
This COLA was based on the increase in the CPI between January 2014 and July 2014. It amounts to 33 cents per hour. Under the terms of the 2011-2016 agreement, payment of this fourth cost-of-living adjustment will take effect in Pay Period 20 (pay date Sept. 26), the same pay period that the deferred second contract COLA will take effect.
The second cost-of-living adjustment for letter carriers under the 2011-2016 National Agreement was $541 annually. This second cost-of-living adjustment was based on the increase in the Consumer Price Index between January 2013 and July 2013. Combined, the two COLAs equal $1,227. This increase will be added to the salaries of all steps in Table 1 and Step O of Table 2, with proportionate application of the COLA to Steps A-N of Table 2.