Im new here and have a question for you gurus. Here's the story- I am a part time employee(international clerk/temorary coverage driver). In my center we have one full time driver that delivers saturday air and i have covered for him several times in the last year and i was paid the $12.50 an hour air rate. Here's my question-I am starting a new position next week and it's a brand new part time air shuttle to the airport. I am wondering if my air pay progression will start next week when I begin this job or did my air rate progression start almost a year ago the first time that I covered Saturday air delivery? Hope somebody can help me out. Thanks in advance!!