Health care premiums are high, and I wish HR would offer more incentives to improve health and lower cost (see "free soda" below). The obese chain-smokers (and there are plenty in the office) and I pay the same.
Dollar Tree is light on perks, but I dig the ones we have (free birthday lunch and other free lunches during the year, soda fountain in the cafe, occasional blue jeans on Friday).
There is little difference in yearly salary increase between those who "exceed expectations" and those who just do enough to keep their jobs. The real boost in compensation will usually come from promotion, which may include a larger bonus and stock award.