Are you good.. at CROSSWORDS? If so, please help?

Question

My little sister, who is 12, needs help and has been given a very hard crossword, to solve. My stepfather, has solved all of the ones, on the first one.. except one, which he needs help with. She can't do it.. by herself!

It is..

11 letters long and it is to do.. with.. HEALTH AND SAFETY. The clue is.. "Should be used all the time in the workshop." The letters we have, at the moment.. are..

_ _ _ M _ _ _ _ _ S _

Thankyou!

Answer 1

common sense

Answer 2

thts quite difficult am sorry

Answer 3

Although the word does not come to me at the moment I think that there's a good chance it ends in "ness."

Answer 4

commonsense!   (Not always a lot of it about though)