A work package is a part of a project structure plan and therefore a part of the project management. It contains the task-based services that are necessary to reach the defined result by a given date. To maintain stability in the project management, each work package must contain the allowed time, the deliverables and the costs and provide these in a clear and simple fashion. To keep the project control effective, one team member or one group of the project team is responsible for each work package. They provide reports on the progress to the project manager. Depending on the complexity of the project into more manageable components, in order to simplify the planning and control of the project. The progress of the individual work packages can be summated to give a progress for the overall project.