First off this isn't me. This is my co-worker. He was hired in 2014 off the street. He wanted to get his 30 days right away, but always got the run arounds from management. (typical right) During this time someone became a full time driver after he did (lower seniority) and was allowed to qualify before him. Showing up in the morning, in browns always to be sent home. He would come back in the evening and work local sort at his driver wage, $18.75. Rinse and repeat this scenario for 2 years!! He was never paid a part time rate. He worked 2 full peak seasons as a driver. Then finally in 2016 he was allowed to get his 30 days. Now he is very upset at his pay rate progression. Hitting top rate in 2020, 6 years after his original full time hire date. Is there any sort of grievance he could file to possibly get back pay or expedite his progression.