No, because they would present massive gains to every industry that loses employees to cancer. That's all of them, by the way. There would be no net loss, and innovation would continue to be rewarded.
If companies were that concerned about loosing employees, companies like deliveroo and amazon would not be destroying their health. Coal minin conoanies would not need health and safety regulation - they used to literally kill their workers
What would no longer be rewarded is parasitism.