I aways found you get what you give.
I have found, the more you give, the more they request. Either that or a Teamster brother is sent a letter of lay-off, because now, with the increased production, they assume the job can now be accomplished, with 9 employees instead of 10.
Same with goals. 7 years ago, the OB crew were treated to dinner every Friday night if we met production goals the prior week. (Pounds per hour.) Depending on the freight, no problem. Production started at 3,000. A month later 3,200. A month later 3,500. After 6 months, the goal was 4,500. Of course, we could no longer reach goal every week.