01 - Pat the beef roast dry with paper towels and season all sides evenly with salt and black pepper.
02 - Heat olive oil in a large skillet over medium-high heat and brown the roast on all sides, about 2 to 3 minutes per side.
03 - Place carrots, potatoes, celery, and onion in the bottom of the slow cooker to form a base layer.
04 - Set the seared beef roast atop the vegetables, then sprinkle minced garlic, thyme, rosemary, and add bay leaves over the meat.
05 - Pour beef broth and Worcestershire sauce evenly over the contents in the slow cooker.
06 - Cover and cook on LOW for 8 hours, until the beef is fork-tender and vegetables are thoroughly cooked.
07 - Remove bay leaves, shred or slice the beef, then serve with vegetables and cooking juices.