Legally, since employee's are merely asked to sign (this is the wording from Linda Mc Mahon, Deputy Commissioner of Operations), one may legally and properly not sign. Anytime one is ordered to sign something that they aren't required to sign or don't want to sign, they may sign noting "ordered to sign" which means they have signed under duress or coercion. Management cannot properly order employees to sign that they fully understand something if they do not fully understand it. This would not be a proper order. In fact, signing if you do not understand would be falsifying a document.