Don't know if this is a normal case, but it always made me laugh...I always laughed at the rewards. I felt that if I’m doing well, pay me. Don’t spend a bunch of money on a meal and then hand me a plaque. Give me $200 bucks or an extra day off. Why I’m self employed now.
A coworker of mine won a big award, something equivalent to "employee of the year." The award was a chrome-plated, die-cast model of a CAT dozer (this was a construction company). It was pretty sweet. There was no monetary award, just the dozer on a nice plaque.
His next paycheck he notices its less than usual; there's a deduction of about $300 on there. He calls payroll to see what's up. Turns out, they treated the dozer award as a "bonus" and added the monetary value to his comp as a bonus, which triggered tax implications.
In short, he won an award and had to pay $300 for it. Good times.