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Journal : Journal of Industrial Engineering

IMPROVING PRODUCTIVITY IN A POOR WORK CULTURE IN THE WORLD OF CONSTRUCTION Kenzo, Himalaya Bima; Pratama, Oktioza; Apfiasari, Steela; Yulaikah, Yulaikah; Maryani, Edna
Journal of Industrial Engineering & Management Research Vol. 6 No. 4 (2025): August 2025
Publisher : AGUSPATI Research Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.7777/jiemar.v6i4.612

Abstract

A good work environment is a key factor in fostering a positive work culture in the construction industry. According to a study conducted by the Ministry of Public Works and Public Housing (PUPR), approximately 45% of construction workers feel that an uncomfortable work environment contributes to their low productivity (PUPR, 2022). Unsafe work environments, such as lack of protection from extreme weather and inadequate health facilities, can lead to stress and dissatisfaction among workers. For example, a building construction project in Jakarta carried out by PT XYZ experienced delays because workers lacked adequate access to rest areas and proper sanitation. This demonstrates that investing in good facilities can improve worker comfort and productivity. Training and skills development also play a crucial role in fostering a work culture. Data from the National Professional Certification Agency (BNSP) shows that only 30% of construction workers receive adequate training in their field (BNSP, 2023). Lack of training can lead to workers feeling insecure in carrying out their tasks, which in turn can reduce productivity. For example, a building renovation project in Surabaya experienced numerous technical errors due to workers lacking sufficient skills in using heavy equipment. Therefore, construction companies need to invest in ongoing training programs to improve workers' skills and knowledge.
Feasibility Analysis of Injection Molding Machine Replacement at CV Gradient Kusmiaty, Agnest Mela Dwi; Pratama, Oktioza; Apfiasari, Steela; Rudini, Rezki
Journal of Industrial Engineering & Management Research Vol. 7 No. 1 (2026): February 2026
Publisher : AGUSPATI Research Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.7777/jiemar.v7i1.688

Abstract

The motorcycle industry in Indonesia continues to show strong market potential.Based on data from the Asosiasi Industri Sepeda Motor Indonesia (AISI), motorcycleproduction between 2013 and 2017 remained high despite a temporary decline in 2015. The increasing demand for motorcycles has directly impacted the demand for spare parts, including Spring Guide components produced by CV Gradient. CV Gradient, a Bandung- based spare parts manufacturer established in 1993, supplies products to major industrial clients. However, the company faces significant production gaps due to limited machine capacity and frequent breakdowns of its Injection Molding machine. Although annual demand for Spring Guide HKWB ranges from 1.12 to 1.30 million units, actual production remains fixed at 806,400 units per year, resulting in an average production gap of 33%. Machine downtime averages 12 days per month (144 days per year), reducing machine utilization toonly 50%. As a result, unmet demand must be subcontracted, leading to lower profit margins, higher costs, and potential quality and delivery risks. Financial comparison shows that full in- house production would generate approximately IDR 40–50 million higher annual profit compared to partial subcontracting. This indicates a significant opportunity loss due to current production inefficiencies. Based on operational and financial considerations, replacing the existing Injection Molding machine is economically feasible. The investment would reduce downtime, increase production capacity, improve quality control, minimize subcontractingdependence, and enhance profitability. Given that the company currently serves only 12% of national demand, machine replacement also supports long-term growth and competitiveness.