Top shelf or bargain basement or cream of the crop they're not going to worry about what happens to you if they can get more money for doing the same work and whether or not you have enough people to cover your route is of no concern to them.
I jumped a few times, #1 was they ended cash and my fav swing route opened because my contractor lost his contract and I ran it 5 yrs , #2 The contractor l did 5 yrs with lost his contract, I ran the route 2 more yrs with another contractor. He promoted me to mini manager when our terminals split, and I ended up running most of the original area 5 psa's , his HD, and learning the rest of the areas. Living a few blocks from the old building I was consistently sent all the way across town to the new facility.
Then I moved near the new building, and like magic, I suddenly had to be at the old building all the time.
I must have bitched about it, because I was approached by another contractor to "upgrade" to full time manager and really never drive unless it's an emergency.
So for $250/week more without driving much I jumped.
Oh the rift that caused was phenomonal, i was "poached".
Not in my mind, I can still go to the other belt and sort or drive 11 trucks, and go the other building and drive 4 more Ground and 4 HD. And both straight trucks.
His loss, should have paid me more. And at the end of the day I chose wisely.