In the state of Washington you don't need anything if you sell from the farm. To sell, for example, at the Farmers Market you need an egg handlers permit and are required to follow WSDA rules. You also need a Health Dept permit. You have to use new cartons properly printed with the warnings and nutritional info, candle for air cells/grade, and blood spots also weigh for size. Purchase stickers for the egg cartons from WSDA stating they were graded. Then you have to keep them in a cooler at 40*. At our market they do have inspecters and they come around with their temp gauge and check your temps. They usually come around two times each summer. I'm sure there is more that I'm not remembering right now. Lots of red tape so unless you have tons of eggs and are willing to go through all the hoops (in WA) stick to selling from your farm. They also don't need to know if you are transporting them to work. No one cares but the government. The less they get involved in our farms the better. There is some good info in the WSDA handling info like the proper way to wash in water warmer than the egg so the bacteria comes out of the egg rather than getting sucked in and spray washing rather than soaking and getting them dried asap. Even selling from the farm there are things you should be doing.