There is talk of my employer's upcoming revision to the employee handbook containing a non-compete agreement. I have been employed with the company for almost 10 years, never having signed anything but a statement that I received, read, and understood the previous employee handbooks (each containing clear reference to employment being 'at will').

With that said, where might I find information on 'midstream' employment / non-compete contracts with reference to additonal consideration (or lack thereof)?