There are a few questions that need to be answered first:
What is your product?
What is your process?
What risk level?
Do you handle any allergens?
Are there any places where there is exposed product, and workers contact the product, whether intentionally or inadvertently?
Is your product RTE, or does it require further processing/cooking/etc. after leaving your plant, prior to consumption?
Scampi, I disagree that company provided clothing is needed in all instances. For example, our operation is very low-risk, with no exposed product, our product is not RTE, and we don't allow allergens in our plant. Therefore, our risk assessment has shown that employee clothing is not a likely source of contamination in our plant.