This book is based on and explains the following sub-contracts published by the Construction Industry Federation: Agreement and Conditions of Sub-Contract for use in conjunction with the forms of Main Contract for Public Works Issued by the Department of Finance 2007 and the Agreement and Conditions of Sub-Contract (NN) for use in conjunction with the Forms of Main Contract for Public Works issued by the Department of Finance 2007 where the Sub-Contractor is a specialist who has been Named by the Employer or whose Contract with the employer has been Novated ("NN Sub-Contractor).