2006 New York Code - Option To Accelerate At Will.

 
  Section 1--208. Option to Accelerate at Will.
    A  term  providing  that  one  party  or his successor in interest may
  accelerate payment or performance or require  collateral  or  additional
  collateral  "at will" or "when he deems himself insecure" or in words of
  similar import shall be construed to mean that he shall have power to do
  so only if he in good faith believes that the  prospect  of  payment  or
  performance  is  impaired. The burden of establishing lack of good faith
  is on the party against whom the power has been exercised.