SaintRick is correct. Unless you are red circled above progression rate, then you will get a retro check for 70¢ for Aug 1 to your seniority date in Sept. File under Art 41 Sec1 as a basis. If you are not red circled, then on July 31, 2013 you should of made 17.25, Sept(seniority date), 2013 should be 18.45. Retro for 70¢ for the time between those two dates.