The following result is obtained by Real-time Research: There are three main sources of arranging workers - There are various points in every city where unskilled labour gathered. Builders can build their own team of workers by training them properly. In most cases, contact with the contractor is done who will arrange the trained workforce. There are various labour union who provide their service, which can be accessed by contacting union leaders. Proper planning and training are done with these workers, so that chances of error can be minimized. Builders take proper measures to identify the point of error. Remember management has the widest scope, it requires everywhere.