Crockpot Hamburger Soup

1 1/2 lb Lean Ground Beef
1 ea Med. Onion, Chopped
1 c Carrots, Sliced
1 c Celery, Sliced
1 c Cabbage, Sliced
6 oz (1 cn) Tomato Paste
2 ts Worcestershire sauce
3 c Beef Bouillon, or Stock

In skillet, brown ground beef and drain thoroughly.Add onion, carrots, celery and cabbage. Combine tomato paste, worcestershire sauce and beef stock/bouillon. Add to crockpot, with Hamburger and stir to blend. Cover and cook on low setting for 8 to 10 hours, or high setting for 3 to 4 hours.