A labor camp stands for exhausting work imposed from outside, and dream books read it as the feeling that effort is being taken from you without meaning or reward.
Has this come up in your dreams before? What was going on in your life then?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.