Abstract:
Construction industry in Sudan is considered as the largest industrial sector that has a
direct effect on the state economy. The productivity of this sector has declined in Sudan and all over
the world since 1960. This study is trying to measure the relationship between the productivity of
construction industry in the Sudan and motivation. A mathematical model is adopted to measure this
relationship. The model is: P = P0 + C1X1 + C2X2 + C3X3 Where: P, P0, X1, X2, and X3 represent
Productivity, Productivity without motivation, physical motivation, moral motivation, and job
satisfaction respectively. C1, C2, and C3 are the constants of physical motivation, moral motivation
and job satisfaction respectively. The overall objective of this study is to enhance the productivity of
construction industry in Sudan. Questionnaire was designed and distributed to numbers of
respondents. A sample of 77 companies drawnrandomly from stratified samples, to represent the
population of the industry’s companies and work names. Three hundred and fifty persons involved in
those companies responded to the questionnaire. Statistical package for social science (SPSS) used to
analyze the collected data. The answers to the questionnaire’s questions revealed that the motivation
increased the productivity by 5.2 % and the relationship between the productivity and motivation in
the respondent companies can be represented mathematically as: P = 0.408 – 0.130X1 + 0.304X2 -
0.209X3 This result means Sudanese companies only apply moral motivation to motivate their
employees. Moreover, there is no enough physical motivation system in these companies, and the
majority of workers are not satisfied with their jobs at these companies
