Rinse the rice under cold water until the water runs clear. Drain and set aside.
Heat the vegetable oil in a large skillet over medium heat. Add the sliced smoked sausage and cook until browned, about 5 minutes.
Add the chopped onion, green bell pepper, and celery to the skillet. Sauté for about 5 minutes, or until the vegetables are softened.
Stir in the minced garlic and cook for an additional 1 minute, until fragrant.
Add the rinsed rice to the skillet and stir to combine, cooking for about 2 minutes to lightly toast the rice.
Pour in the chicken broth and add the Cajun seasoning, black pepper, salt, Worcestershire sauce, and bay leaf. Stir well to combine.
Bring the mixture to a boil. Once boiling, reduce heat to low, cover the skillet, and simmer for 20 minutes, or until the rice is cooked and the liquid is absorbed.
After 20 minutes, remove the skillet from heat, and add the shrimp. Cover and let sit for an additional 5 minutes to allow the shrimp to cook through.
Remove the bay leaf and fluff the rice with a fork. Adjust seasoning to taste.
Serve hot, garnished with sliced green onions and a splash of hot sauce, if desired.