In 10-inch skillet, heat oil over high heat until hot. Add pork; sprinkle with salt and 1/8 teaspoon pepper. Cook 3 to 5 minutes, stirring frequently, until browned.
In 3 1/2- to 4-quart slow cooker, mix pork and remaining ingredients except green beans.
Cover; cook on Low heat setting 7 to 8 hours.
About 20 minutes before serving, stir thawed green beans into stew. Increase heat setting to High. Cover; cook 15 to 20 minutes longer or until green beans are tender.