In a Dutch oven or large pot, heat olive oil over medium heat. Add onions and cook until translucent. Add carrots and parsnips, cook an additional 2-3 minutes. Add mushrooms, garlic, thyme, salt & pepper. Cook until mushrooms start to sweat. Sprinkle flour over vegetable mixture and stir until evenly coated. Pour in diced tomatoes, Worcestershire sauce, vegetable broth and wine. Stir in tomato paste and barley. Increase heat to bring pot to a boil. Reduce heat and let simmer 45 minutes or until barely is cooked through.