Employee refusing to wear PPE They cannot sign a waiver as the responsibility remains with the PCBU to ensure that the correct PPE is being used.
I must ask how the cuts are occurring, is it down to technique and ergonomics, I would look at the operation in great detail and break it into components, to see if a small change in the process could reduce the risk and occurrence.
At the end of the day if they are required to wear particular PPE there should be an education process and in worst case a HR process, I have just been in a similar position for PPE in the work place, and the HR route is a last resort.