The policy was to address every single issue he said was responsible for his performance to his satisfaction. In fact, in such cases in this area, the problem couriers are asked what are the 3 biggest issues affecting their performance and every effort is made to remedy those issues. There should be a significant improvement in performance as a result. Not saying that they should be setting the world on fire, but showing a noticeable improvement and maybe (dare I say it?) making their SPH and service goals.
If a courier says he'd do better were it not for A, B, and C, and those issues are fixed to his satisfaction, he has no excuse for continued poor performance. And you know what? Those with continued poor performance don't like having that pointed out to them.
At all.