| Background and aims: Contractor's safety performance assessment provides an opportunity for
managers and decision-makers to choose contractors based on safety principles as an effective factor.
The construction industry creates a complex working environment due to the use of complex devices and
equipment, modern construction methods, temporary organizational structures, and the multidisciplinary
and multitasked aspects of the project workforce. Construction projects are performed by contractors in
many countries, and the accident rate is very high in this industry. Therefore, the safety of the workplace
in the construction industry needs considerable attention. In the construction industry, completing a
high-quality project with the minimum time and cost is a priority, and safety is a secondary concern. The
lack of motivation to promote a safety culture at the organization and project level has weakened the
safety performance and made construction one of the most dangerous industries in the world. It is
possible to improve the safety standards of contracting organizations with continuous monitoring and
reviewing of their safety performance. To achieve this goal, safety performance measurement methods
must be available. To achieve the safety objectives of the safety management system, organizations
require a rational framework for assessing safety performance to measure the effectiveness of the
organization in preventing accidents over time. The goal of measuring the safety performance is to
provide a feedback mechanism to accelerate improvement. The effectiveness of the feedback mechanism
is directly dependent on the use of appropriate information resources. Safety performance is one of the
most important concerns of project managers, because poor safety increases project failures and affects
other key performance indicators. For example, the unsafe work environment reduces the quality of
work and causes extra time and costs. This study was conducted to evaluate the contractor's safety
performance indicators |