Reasons for possible delays & cost overruns on projects

Hi, I am preparing a report and compiling all possible (real life) reasons which has delayed the projects and/or lead to cost overruns. I can name a few (mentioned below) but can you add to this list ? Weather Poor Labor Productivity Labor Unions - Strikes, slowdown etc Force Majure Delivery of key equipment Poor/Re- Engineering Thanks,

Hi, I will add the following reasons Poor planning Poor Management Poor Change Management

Here is a quick list: 1. Poor Estimates 2. Scope Creep 3. Not reading between the lines 4. Poor Project Management 5. Changes in management 6. Inefficient uses of material 7. Increased prices 8. Unforeseen Events

Scope creep shall not be a contributing factor for any cost over runs, if contract is administered professionally. The contract conditions should be checked initially to see whether it clearly stipulates the way forward for claiming any additional works beyond the main contract scope. Diligent contract administration including timely notifications to the client for any Instructions and later claiming additional cost will prevent any cost overrun. Hence in line with the above situation, I strongly believe lack of vigilant and apt contract administration can be a cause of cost over run.

Major factors for cost over-run on any project are: