Oh no - I've Had The Dreaded Worksafe Call. Ask them what type of coffee they want from the cafe.
The more you are polite and work with them, the more understanding and lenient they actually are to you. If they find an improvement, and it is clear you have not noticed it before, they look at it more as a learning opportunity for the business. If it is clear you know about it, and have no plan or just don't care about it, that is when they can get nasty. If you have a plan and reasonably cannot do anything about it at this time, ask if they have any recommendations that you can look into. It shows you are open, willing to do research and look for a solution, and not just writing it off as 'too bad'.
Welcome them in, make them a coffee, hand out some biscuits and use the opportunity as a free H&S session for the company to add value. In our experience, WorkSafe have a education mindset, over a handing out fines mindset. We often take our local inspector out for a coffee and chat about any issues we are scratching our heads over.