Heat oil in large saucepan over medium heat until hot. Add onion; cook and stir 3 to 4 minutes or until tender. Add refried beans, whole kernel corn, shoepeg corn, chiles, salsa, broth and jerk seasoning; mix well. Bring to a boil. Reduce heat to low; simmer 5 minutes, stirring occasionally. Add ham, olives and lime juice; mix well. Cook 3 to 4 minutes or until thoroughly heated, stirring occasionally. To serve, ladle soup into individual bowls. Top each serving with 1 tablespoon sour cream and lime slice.