Arlie Russell Hochschild, who introduced the term in 1979, distinguished emotion work – unpaid emotional work that a person undertakes in private life – from emotional labor: emotional work done in a paid work setting. Emotion work has use value and occurs in situations in which people choose to regulate their emotions for their own non-compensated benefit (e.g., in their interactions with family and friends). By contrast, emotional labor has exchange value because it is traded and performed for a wage.