Posted By Michelle Doran Is it written down anywhere that a Hard Hat must be replaced every three years. I have heard this on numerous occasions. If so, is it from the date that is stamped on the hat or the date that you purchase it? Can anyone help - I have searched the construction head protection regs.

Posted By Tony abc jprhdnMurphy Its another myth.

Posted By Steve Cartwright I would ask the manufacturer for their evidance as to why they should be replaced every 3, 5 or whatever years. Its probably just a ploy to get you to buy new ones. If they are in good condition and there are no signs of damage then why replace.

Posted By Bob Shillabeer No its not about making a profit. The life span of a hard hat is limited as the material they are made from reacts with the environment they are used in. The material gets harder and becomes more brittle and losses the impact resistance. That's why they have a life. This can be seen as a circular indication normally divided into quarters of the year and a year of manufacture, a small arrow shows either the date of manufacture or the expiry date of the hard hat. Yes some modern hats are made of material that is unaffected by sunlight, but this is not shown so don't rely on this as an excuse to avoid having to manage the issue. Replace them when they reach the date indicated or whenever they are subject to possible damage as result of being hit in anger so to speak as only one impact can reduce the validity of the hard hat and must be replaced. Forget about suppliers making money it won't stand up in court as a defence.