Literature review includes definition of rework, describing rework as waste in construction, identification of possible factors causing rework based on different models of rework and comparison of the percentage of rework cost from previous research.2.1 Definition of ReworkEvery construction project is unique in nature and the problems that arise are unpredictable. Many activities are involved in a single project. Retouching therefore cannot be avoided. Rework and waste are recognized as non-value added elements that affect the performance and productivity of construction projects (Alwi, 2002). There are different terms associated with rework, such as non-conformance, quality deviations, quality failures, and defects. Rework is defined as the wasted effort of redoing an activity that was not performed accurately the first time (Love, 2002a). When a product or service does not meet the customer's requirements, the work must be redone. Most of the time, rework took place due to the complex characteristics of the construction process. The main cause of reshuffling is uncertainty generated by poor information flow. CII (2001a) defines “field rework as activities that should be performed multiple times and activities that result in the undoing of work already done.” Fayek et al. (2003) modified the definition and defined "field rework as field activities that must be performed more than once in the field, or activities that remove work previously installed within the project, whatever the source, when no change order has been made. has not been issued and no change in scope has been identified by the owner. of paper......by work sequencing, inadequate labor protection, lack of coordinationOyewobi, LO and Ogunsemi, DR (2010) Quality defect, lack of understanding and correct interpretation of customer requirements, omission when design, change of plan and scope by client, Error during design, Ineffective coordination and integration of components, Inadequate resources, Conflicts of opinions among participants, Lack of quality management system, Delayed involvement of users , Poor communication, Lack of support from site management, Poor information flow, Defective workmanship, Negligence, insufficient funding The Construction Owners Association of Alberta Rework Committee (2001) developed the fishbone classification system or Cause and effect diagrams to categorize the causes of rework. They classify the causes of recovery into 5 main categories and each category contains 4 main causes.