Most of them operate language institutes and offer an English language major. Therefore, native English speaking professors and ESL instructors are needed. Depending on the position, different educational background changes the salary and teaching positions within Universities. Generally, MA degree is required for the lecturer. Those with PhD can receive a better position.
Some big companies operate their own training centers for employees and have English classes.
Due to a high salary and the good working environment, the competition for this job is high. In Korea private language institutes employ most ESL teachers. Students vary from pre-school children to adults. By playing games and having everyday conversations, teachers need to make students interested in English. Conversation and basic grammar, teachers help students speak English with confidence.