I clean windows for commercial properties… what do I do if a client does not pay?

Hi Bryce, Even though you have a verbal contract, it can still be enforceable in court as an implied contract because you rendered a service and your customer benefited from it. It's always best to have a written contract because it can provide provisions for non-payment and you can add a provision for attorney's fees in case you have to go to court to be paid. You need a Terms and Services Agreement for your business because it protects your business from a lot of things, other than just non-payment for your services. I draft these types of agreements. As for collecting payment, depending on the amount owed, you will have to sue your customer in court in either small claims court or circuit civil court. My firm does not do any type of litigation. I recommend you find a local attorney for that.