Year 2020, Volume 8 , Issue 1, Pages 28 - 36 2020-06-30

Modelling occupational health and safety risks among unskilled workers in construction industry
Modelıng Occupatıonal Health And Safety Rısks Among Unskılled Workers In Constructıon Industry

Hezekiah Oluwole ADEYEMİ [1] , Olatilewa Rapheal ABOLADE [2] , Ajibola Oluwafemi OYEDEJI [3] , Olanrewaju Bilikis OLATUNDE [4]


To enhance workers’ protection in construction tasks, Occupational Health and Safety Risks (OHSR) needs to be properly recognized, assessed and controlled. This study modeled Health and Safety Risk (HSR) among unskilled workers in construction works. Data was collected from 150 subjects in 12 construction sites located in Southwest Nigeria. Variables considered to play key roles in HSR causation were measured with questionnaire. All variables that correlated significantly (p≤ 0.05) to HSR on the tasks were noted by Spearman’s rho correlation (Src) using SPSS software. The model prediction was by adjusted R2 and was validated by comparison with Human Professionals’ Predictions (HPP). Model Cook’s distance and its closeness to being normally distributed were evaluated. 37 attributes variables were initially collated with 13 predictor variables remained in the optimum model. Wrong work-methods, lack of work-control and harsh outdoor environment ranked among the strongest positive β coefficients (0.217, 0.127 and 0.126 respectively). The maximum coefficient of the adjusted R2 determination was 0.708. The histogram of the residuals suggested closeness to being normally distributed and 0.930 as the maximum Cook’s distance. Comparison between the OHSR model and the HPP had Src strength of 0.965 (p<.01). The OHSR showed statistically significantly higher level of hazards’ rating (3.7533 ± 0.233) compared to HPP (3.2667 ± 0.18097), t(28) = -1.648, p = 0.197. OHSR model was developed and the performance was rated good, satisfied the study’s objectives. The author recommended development of measures at reducing β coefficients of all the predictor variables to minimize workplaces OHSR

 

To enhance workers’ protection in construction tasks, Occupational Health and Safety Risks (OHSR) needs to be properly recognized, assessed and controlled. This study modeled Health and Safety Risk (HSR) among unskilled workers in construction works. Data was collected from 150 subjects in 12 construction sites located in Southwest Nigeria. Variables considered to play key roles in HSR causation were measured with questionnaire. All variables that correlated significantly (p≤ 0.05) to HSR on the tasks were noted by Spearman’s rho correlation (Src) using SPSS software. The model prediction was by adjusted R2 and was validated by comparison with Human Professionals’ Predictions (HPP). Model Cook’s distance and its closeness to being normally distributed were evaluated. 37 attributes variables were initially collated with 13 predictor variables remained in the optimum model. Wrong work-methods, lack of work-control and harsh outdoor environment ranked among the strongest positive β coefficients (0.217, 0.127 and 0.126 respectively). The maximum coefficient of the adjusted R2 determination was 0.708. The histogram of the residuals suggested closeness to being normally distributed and 0.930 as the maximum Cook’s distance. Comparison between the OHSR model and the HPP had Src strength of 0.965 (p<.01). The OHSR showed statistically significantly higher level of hazards’ rating (3.7533 ± 0.233) compared to HPP (3.2667 ± 0.18097), t(28) = -1.648, p = 0.197. OHSR model was developed and the performance was rated good, satisfied the study’s objectives. The author recommended development of measures at reducing β coefficients of all the predictor variables to minimize workplaces OHSR

 

Unskilled, safety, model, predictor, variables
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Primary Language en
Subjects Engineering
Journal Section Research Article
Authors

Orcid: 0000-0002-5815-7321
Author: Hezekiah Oluwole ADEYEMİ (Primary Author)
Country: Nigeria


Orcid: 0000-0002-5815-7321
Author: Olatilewa Rapheal ABOLADE
Institution: Department of Mechanical Engineering, Olabisi Onabanjo University, Ago-Iwoye
Country: Nigeria


Author: Ajibola Oluwafemi OYEDEJI
Institution: Department of Mechanical Engineering, Olabisi Onabanjo University, Ago-Iwoye
Country: Nigeria


Author: Olanrewaju Bilikis OLATUNDE
Institution: Department of Mechanical Engineering, Olabisi Onabanjo University, Ago-Iwoye
Country: Turkey


Dates

Publication Date : June 30, 2020

Bibtex @research article { mjen594302, journal = {MANAS Journal of Engineering}, issn = {1694-7398}, eissn = {1694-7398}, address = {}, publisher = {Kyrgyz-Turkish Manas University}, year = {2020}, volume = {8}, pages = {28 - 36}, doi = {}, title = {Modelling occupational health and safety risks among unskilled workers in construction industry}, key = {cite}, author = {Adeyemi̇, Hezekiah Oluwole and Abolade, Olatilewa Rapheal and Oyedejı, Ajibola Oluwafemi and Olatunde, Olanrewaju Bilikis} }
APA Adeyemi̇, H , Abolade, O , Oyedejı, A , Olatunde, O . (2020). Modelling occupational health and safety risks among unskilled workers in construction industry. MANAS Journal of Engineering , 8 (1) , 28-36 . Retrieved from https://dergipark.org.tr/en/pub/mjen/issue/55261/594302
MLA Adeyemi̇, H , Abolade, O , Oyedejı, A , Olatunde, O . "Modelling occupational health and safety risks among unskilled workers in construction industry". MANAS Journal of Engineering 8 (2020 ): 28-36 <https://dergipark.org.tr/en/pub/mjen/issue/55261/594302>
Chicago Adeyemi̇, H , Abolade, O , Oyedejı, A , Olatunde, O . "Modelling occupational health and safety risks among unskilled workers in construction industry". MANAS Journal of Engineering 8 (2020 ): 28-36
RIS TY - JOUR T1 - Modelling occupational health and safety risks among unskilled workers in construction industry AU - Hezekiah Oluwole Adeyemi̇ , Olatilewa Rapheal Abolade , Ajibola Oluwafemi Oyedejı , Olanrewaju Bilikis Olatunde Y1 - 2020 PY - 2020 N1 - DO - T2 - MANAS Journal of Engineering JF - Journal JO - JOR SP - 28 EP - 36 VL - 8 IS - 1 SN - 1694-7398-1694-7398 M3 - UR - Y2 - 2020 ER -
EndNote %0 MANAS Journal of Engineering Modelling occupational health and safety risks among unskilled workers in construction industry %A Hezekiah Oluwole Adeyemi̇ , Olatilewa Rapheal Abolade , Ajibola Oluwafemi Oyedejı , Olanrewaju Bilikis Olatunde %T Modelling occupational health and safety risks among unskilled workers in construction industry %D 2020 %J MANAS Journal of Engineering %P 1694-7398-1694-7398 %V 8 %N 1 %R %U
ISNAD Adeyemi̇, Hezekiah Oluwole , Abolade, Olatilewa Rapheal , Oyedejı, Ajibola Oluwafemi , Olatunde, Olanrewaju Bilikis . "Modelling occupational health and safety risks among unskilled workers in construction industry". MANAS Journal of Engineering 8 / 1 (June 2020): 28-36 .
AMA Adeyemi̇ H , Abolade O , Oyedejı A , Olatunde O . Modelling occupational health and safety risks among unskilled workers in construction industry. MJEN. 2020; 8(1): 28-36.
Vancouver Adeyemi̇ H , Abolade O , Oyedejı A , Olatunde O . Modelling occupational health and safety risks among unskilled workers in construction industry. MANAS Journal of Engineering. 2020; 8(1): 36-28.