In Palestine, the construction sector contributes to 26% of
the Palestinian gross domestic product (GDP) (Enshassi et al.
2006). This is a relatively high proportion covered by this sector
compared with what is mentioned by Chitkara (2004) in that the
construction industry accounts for 6–9% of the GDP in many countries;
thus, it strongly affects various economic, social, educational,
and vocational sectors. In spite of the substantial success achieved
by the construction industry in the Palestinian territories, in terms
of economic growth, its contribution to the local output, employment,
and meeting partially the local needs of the Palestinian society,
this industry suffers from a number of problems that affect
time, cost, and quality performances and lead to preventing it
from assuming its big role in the Palestinian economy as is
the situation in neighboring and developing countries (Enshassi
et al. 2006). Some of these problems according to Al-Najjar
(2008) are