Engineer refusing to file/disclose patents

In addition to his regular work, our company has a patent program where engineers can write up a patent for a novel idea, and submit it to our patent team. The company has recently decided to dial back the benefits for this program, to a simple $100 “finder’s fee” for a patent submission, and an additional $900 for a “good” patent. Our senior engineer has expressed concern with the company, as he can only make more money by being promoted (our bonus structure is based on length of stay, so employees have to be on board for at least 7 years to earn a decent bonus), and the only offices with openings for higher-level engineering positions would require him and his family to relocate (moving across the country).

Source: workplace.stackexchange.com