As an employer, you have to ensure the safety of your employees while working in hazardous construction or industrial sites. With that said, you should provide them with hard hats for their protection. In addition to that, you can put some safety rules pasted on their head gear through the use of stickers on hard hats.
If you think that these decals are just for show, they actually aren't. As a matter of fact, they can serve as an extension of your company's concern of the workforce's safety. You can use these stickers to reinforce some of your workplace safety rules. If you want to remind your team not to engage in horseplay or if you want them to keep their stations clean, you can have some decals printed out with a particular message on it. After that, you can glue the printouts on the protective head gear. It's as simple as that.
Stickers on hard hats can also help cover some worn out parts of the safety head gear. However, the use of these decals must be limited so that they do not make it difficult for the inspectors to check the equipment for damage assessment and for safety compliance.