There are liability considerations, intellectual property concerns, and the list goes on when you're running or starting a business. If you're planning for a successful business, everything form Entities and Agreements to Copyrights, Trademarks, and even Trade Secrets, if applicable, are important to plan for.
Wear Your Seatbelt.
Having your business entity and agreements in order is a lot like wearing your seat belt.
Sure, you can always seek help after the unpleasantly unexpected occurs but you're taking a risk you could be avoiding, and like a seatbelt, trying to put it in place after the fact, isn't going to do you much good.
Liability. What if you get sued? What if your business goes under?
Entity. Do what you can to protect your personal assets. The time to do this is when you are setting up your business entity.
Agreements With Independent Contractors.