If you need a constant influx of 6K paychecks every month and you don't have a dime in saving to show for it--you're in trouble.
My wife and I run a small tech company--we have, at the very least, 6 months of income saved in the event we have to go without a paycheck or shit just falls apart. We pay cash for things like cars and vacations and we stay out of debt.
We're not worried about losing our jobs--we plan as if that's inevitable.
EDIT: Actually, the only thing I do worry about is healthcare. This country has its head up its ass as far as that goes. Group insurance is great (although we pay about $950/mo to insure 3 partners)--if you have to get individual coverage, good luck...