This study aims to look at the flexible work arrangements in manufacturing in the Covid-19 pandemic conditions, starting from knowing the response regarding the flexible work arrangements conducted by PT INKA (National Railroad Industry Co. Ltd.), the FWA factor undertook, the output obtained from the FWA, and the dynamics of the FWA that can increase productivity in manufacturing companies. The response regarding FWA was from open-ended questionnaires. The data was analyzed by looking at the keywords in each response. From 1460 respondents, these were into several categories, namely the response, factors, and outputs produced. The time of WFH is still from 07.30 WIB until 17.00 WIB. The flexible work arrangement done is flexplace without flextime, telecommuting. WFH conducted by PT INKA was carried out for 14 days from 18 March 2020 to 31 March 2020. These 14 days is to prevent the spread of Covid-19. The results of the study revealed: (1) Response regarding FWA, namely feeling comfortable, calm, and feeling more flexible. (2) Factors influence the effectiveness of FWA in this study, personal and organizational. Personal factors that influence are hard competency, soft competency, facilities, and workplace environments owned by employees. Adaptability (soft competency) in the implementation of this FWA system will accelerate the process of completion of the work. (3) The output generated from FWA, namely Work-life balance, Psychological well-being, work motivation, and work effectiveness. According to several studies, FWA can improve work-life balance for employees. The grand findings of this study, if FWA wants to be applied in more priority to engineering and supporting work