Abstract
This paper investigates the extent of delays in large government investment projects in Norway. We use a data set consisting of 112 road, railway, building, defence and ICT projects. All projects have been planned and implemented within a standardised governance framework. This ensures a more robust assessment of causation compared to studies that use data from disparate projects around the world. The results have shown that about half of the projects are completed on or before time, there are a large proportion of projects that are severely delayed. Defence projects are particularly prone to problems during their delivery. This is in accordance with findings from other countries. The paper shows that there has been a slight improvement in time, that is, the extent of delays seems to have been reduced over the last 20 years. Counter to expectations, projects that are delayed do not seem to be more at risk to overrun their costs.
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