Mix soy sauce, worcestershire sauce and olive oil together. Pour over ribs and mix to make sure each rib is coated.
Season to taste with salt, pepper, garlic and onion powder. Be careful with the salt since soy sauce is naturally salty.
Cook in crock pot on low 8-10 hours or high 4-6 hours.
Optional: Remove from crock pot (store liquid as stock if you like, otherwise discard) and coat ribs with your favorite sauce. Bake in 350 degree oven for about 20 minutes. I have found the ribs taste great either way.