Coat the cubed beef with flour, 1/2 teaspoon salt, and 1/2 teaspoon black pepper. Heat the oil in a large skillet and add the coated beef in a single layer. Brown on both sides and transfer to a greased or lined slow cooker.
Add the beef broth, cubed potatoes, sliced carrots, diced onion, Worcestershire sauce, 1 teaspoon salt, 1 teaspoon black pepper, dried thyme, and bay leaf. Stir to combine.
Cover and cook on high for 4-5 hours or low for 7-8 hours or until the meat is full cooked and the potatoes are tender. Garnish with chopped fresh parsley.