[pc86]

Thank you for the well-reasoned and eloquent response.

Snark aside, whether it is or is not actually depends on what state you're in. For many, it is not new consideration.[0]

[0] http://www.beckreedriden.com/wp-content/uploads/2012/09/Nonc...

[PhantomGremlin]

Very informative. So much varies by state. E.g. in Oregon:

   Continued Employment is Sufficient Consideration: No

[pc86]

Some are a clear yes, some are a clear no, some are yes after a certain duration (I imagine to prevent notice the day before you get a paycheck, that sort of thing), some are yes under very specific circumstances.