Construction is questionably a main part in relative to
comprehensive development . It plays an important part in the
role in the economy as and in people’s survives over influencing
and preserving the environment of the city-region’s constructed,
and it is a rising sector. To provide an efficient performance and
more development of the economic, there is emphases on
optimizing the employees contribution to the goals and areas of
the governments. The training significance as a management
central part has long been documented by principal writers.This
paper aim to find the impact of training in the construction
industry and how the training is been underestimate lead in
increase the cost by using the simulation technique system
dynamic. The research methodology include designing of
questionnaire that consist of three items , the first item include ,
general Training (Training Program), evaluation of on-the-job
training and evaluation of training after establishing work and
the second part include building the model using system dynamic
to show the effect of training on the cost of construction. the
results the authors made the following conclusions .The absence
of training program has very strong effect as the absence of such
program is caused by the finance absence , this is common
problem with Iraqi construction industry. The most environment
of the Iraqi industry is the absence of the finance from both
owner and contractor as they ignore this part and consider
unnecessary expenses and this will lead to unqualified
engineering or worker in the wrong job .The absence of
management mean that , usually the contractor and his staff are
working without the supervise or represented from the owner
side , which some time mean unskilled workers may be hired
which lead to delay of the work and cost overruns .