Question: We operate a concrete block manufacturing factory with noise levels ranging from 93dB to 103dB. All workers wear hearing protection. Due to these high levels and 10 hours a day exposure, we want to enforce Class 5 ear muffs.

However, current earplug-wearers object, due to discomfort, and will not sign our new Hearing Protection Policy, strongly recommending earmuffs.

Can we enforce an ‘earmuffs-only policy’?