Pros
Stability and consistency are advantages here. While the total compensation is not as competitive as other firms, layoffs are almost unheard of and many people work here their whole career.
Cons
Total Compensation is competitive with other large corporations. However, management bonuses make up a much larger percentage (34% bonus for mgrs, and for 17% sups) of your total compensation then average . At first this sounds like a good thing, but half of your bonus is frozen for five years while the half you get is taxed at a high rate. Also, remember that Total Compensation is in line with other companies means you get less money in your pocket. Essentially what UPS is able to do is shift your compensation into your bonus which they can defer till the end of the year for the first half, and out five more years for the second half.