You guys are mixing up PBS with changing the work rules. The only way that the company gains with preferential bidding, is if other rules change. If you insist that the other rules not change, then there is no downside to PBS - only good. When I hear someone say that it costs jobs - that is just not correct. It does cost jobs if other rules get changed at the same time. If you do not allow that to happen, then productivity does not change. It is as simple as that.