Do your Risk Assessment for all jobs then the Job procedures for everything you do these things are mandatory, and they must also include that you following Operation manuals of all machinery used. example: A line trimmer without a guard could cost a worker or you a eye and your business hundreds of thousands. It will be seen as negligent and insurance wont cover that. Ignorance is not a excuse these days, you wont get away with the, "I didn't know", you have to have something in place to protect everyone from all hazards. You have to make reasonable steps to protect the public, workers and yourself.
Hi Vis is a must, workers are on the road to unload and that is a serious hazard.
Sun protection = full length shirts and pants, hats gloves and sunscreen. don't ever supply a uniform that doesn't cover the whole body, skin cancer is a killer and NOT protecting your worker would be seen as negligent and you could loose you business and house, negligence isn't covered by insurance so you will loose everything.