In Part VI of his Interpretation of Dreams (1900) Sigmund Freud uses the term Dream Work to collect the mechanisms which he theorises are involved in the production of the latent content of the dream.
Freud was among the first physicians to recognise that dreaming is important to the psychological and physiological health of the individual and saw it as an interface between the conscious and unconscious processes. Freud suggests that when we are conscious a .censor. keeps us from perceiving the contents of the unconscious, but when we are asleep this censor is relaxed. On the margin between sleeping and waking we may glimpse not so much the unconscious but figures of some of the contents of the unconscious which are …
Clark, Robert. "Dream Work [Traumarbeit]". The Literary Encyclopedia. First published 22 October 2005
[http://www.litencyc.com/php/stopics.php?rec=true&UID=1603, accessed 20 January 2017.]