Delays are frequently reported as the cause of several conflicts that affect the different parties involved in construction projects. In order to avoid these conflicts and succeed on the delivery of construction projects, contractors should implement project management processes. Project management includes a number of planning and controlling processes that are recommended for complying with the owners' requirements related to project time, cost, quality, and others. The study reported in this paper aimed at assessing the use of processes related to Project Time Management and its relation with project schedule performance (i.e., timely completion). The study included the assessment of fourteen school construction projects executed by a public agency in the Yucatan Peninsula, Mexico. These projects were monitored during the construction phase in order to measure two different variables: the degree of use of processes related to Project Time Management and the project performance regarding timely completion. The results demonstrated there is statistical dependence between these two variables. In this case, it was found the projects that attained timely completion were also those in which most of the recommended planning and controlling processes had been implemented.
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