I really don't not get this "get my foot in the door" business. I know lots of people—drivers and inside workers, and they all got their start being p/t package handlers.
That is how I am getting my start. It seems to be the best, most reliable way (best doesn't always mean easiest) to get your foot in the door. Put in your time, work your shifts, sign the sheet. Sure, there are outside hires occasionally, but I see so many people banking on the hope of being an outside hire or seasonal to FT driver.
Just take your lumps, join the Union, show up and sort those dang packages, load those package cars and trailers. We all have to start somewhere. Enough of this PVD/Seasonal/I am getting my CDL and applying off the street with my fingers crossed business. IF you get in that way, great. Just saying, from what I've seen and heard through experienced friends, and read here...it is way rarer.
I wish anyone who is trying to get in this way the best of luck. As for me, I'll keep sorting packages, working two jobs and waiting my turn.