Do you allow your employees to alter their uniform for religious reasons?

We totally respect our employees’ religious beliefs and recognise that some women wear a religious headscarf, or hijab, and some men wear a turban. We allow these things to be worn of course, but do require the employee keeps their headscarf or turban clean, dark in colour and free from frayed edges, tassels or beads as they could get trapped in equipment or fall into food.