Heat oil in large saucepan on medium heat. Add rice; cook 3 min., stirring frequently. Add broth mixture, corn and remaining broth; stir. Bring to boil, stirring frequently; cover. Cook 3 min., then simmer on medium-low heat 20 min. or until rice is tender and liquid is absorbed. Remove pan from heat. Fluff rice mixture with fork; stir in ham. Spoon into serving dish; cover to keep warm.