Much construction work is done by sub--contractors, particularly the so--called domestic sub--contractors, appointed by the main contractor. The former usually work under the standard sub--contract DOM/1 for use with JCT 80, or DOM/2 for use with JCT 81----where there is contract design. Unfortunately, many sub--contractorsa rights are often abused because they have little or no understanding of their rights and obligations under the new contracts. Written by an experienced quantity surveyor, this new book provides a clause--by--clause summary of these important principles.