[smileysteve]

As most states are At-Will, both the employer and employee can do this whenever they please.

[chrisbennet]

That's orthogonal my point. My point was that when an employer gives you a new employment agreement you should recognized this for what it is - a renegotiation of terms. At that point, you should feel free to negotiate right back.

At-will simply means that they can fire you if you don't sign.