I WORK "LIKE" A TEACHER
Spanish speakers often make this mistake because they are thinking in Spanish and translating into English. The word "like" in this case is incorrect.
When you are talking about your profession or the profession of another person you need to use the word "as". So, for example: "He works as a teacher during the day and as a waiter during the night".
Hope that helps!
Soy el director de Daniel Smith + Partners. Tengo más de 15 años de experiencia enseñando inglés a españoles.