I guess it depends on the company. My wife's company's standard buyout is 2 weeks per year worked (she works in travel). 1 week of severance per year worked is not great. In the current economic environment I would think people would be very hesitant to take it. Lets say I have been there 10 years, means I only get 10 weeks severance. I still need to find a new job and there are tens of thousands of other laid off engineers competing for jobs and those jobs are very limited. Odds of finding a new one before severance runs out is low.
If you don't take it you run the very real risk of getting cut with nothing.
If you don't take it you run the very real risk of getting cut with nothing.
Unfortunate situation all around.