Project Delay is an unplanned and unexpected deferment of a project because of some event or occurrence that impedes the project’s commencement or continuation. It is the length of time that extends the project duration and causes a disruption in the delivery of project goals and objectives.
Project delays are often caused by circumstances that create barriers to launch and further implementation of project activities. Rarely a delay can be caused by a request of the customer, sponsor, or other stakeholders have enough authorities on their project.
When project delays are unexpected, they are uncontrollable and have rather a negative impact on project activities and results. An unexpected delay extends the overall duration of project activities and entails an increase in project costs. It generates time-associated cost effects that increase resource consumption and require more time for reaching project success.
In order to prevent the negative impact of project delays, it is reasonable to establish delay allowance at the very beginning of a project. Delay allowance is the length of time included in the project schedule in advance to cover unpredictable contingencies and expected minor delays. It is a mechanism of increasing project safety through preventing activity disruptions and creating time buffers.