There is a pretty hefty bonus for the STL if their store is a golden contribution store. This means that they 1) Meet payroll for the year 2) Meet sales for the year 3) Have a green operational score on DTK
You actually have to do that every month, not just yearly.
I.E. - Back 1,000,000 hours payroll, beat yearly sales goal by (Dr. Evil voice) ONE MILLION DOLLARS, and get store score above 100... then be .00000001% below on each in December = Not a Golden Contributor.
It ain't easy gettin' that GC.