This study examined at the effects of ethical leadership, job chracteristics, and individual factors on airline employees’ job satisfaction. It makes use of samples of the airline employees from a Indonesia airline company. From the results of structural equation modelling analysis, ethical leadership and job chracteristics were found positive effect on airline employees’ job satisfaction as well as ethical leadership were found positive effect on airline employees’ job chracteristics. In addition, leaders are also more likely to choose employees who are able to work independently and see the value of their own work and work with an ethical environment.

This study aims to analyze the improvement of the operational performance of Indonesia’s Soekarno-Hatta Airport train through service quality which is mediated by train passenger loyalty and passenger satisfaction. The main problems in this study are the use of the same railway for long-distance train, airport train, and commuter Line train, the limited use of airport railway with four schedules, the headway which becomes 30 minutes since the number of travels becomes 82 trips, and the tariff being applied now is considered as burdening the passengers. The research method uses a quantitative analysis approach with the technique of Structural Equation Modeling-Lisrel. Data collection is done through observation and questionnaire distribution. The respondents are 306 passengers of trains heading for Soekarno-Hatta Airport. The benefit of this study for the domestic railway company is that by improving service quality, passenger loyalty and satisfaction, it will improve the operational performance of airport trains. The result of this research indicates the significant influence of service quality variable on passenger loyalty through passenger satisfaction, the significant influence of service quality variable on operational performance through passenger satisfaction and passenger loyalty as well as the significant influence of passenger satisfaction variable on operational performance through passenger loyalty.

This study aims to analyze the contribution of Green Manufacturing and Green Distribution on improving the performance of Green Supply Chain Management (GSCM) through Reverse Logistics. The development of industry and increasing consumer concern for the environment as well as issues regarding the concept of an environmentally sound industry have forced industries to adjust in line with the GSCM concept. To make the program a success, Green Manufacturing, Green Distribution, and Reverse Logistics are assumed to be supporting the implementation process. This study uses quantitative methods, with the number of samples taken randomly as many as 70 people. The analysis was carried out using the Path Analysis method. Hypothesis testing was carried out in two stages, namely Structural Model-1 and Structural Model-2 testing to obtain each path coefficient number. The results of the study conclude that there is the contribution of Green Manufacturing, Green Distribution, and Reverse Logistics on the success of GSM implementation so that companies must always pay attention to the facilities and related policies to improve the performance of those variables.

The purpose of this study was to determine and analyze the influences of occupational health and safety, work motivation on the ship's crew performance at Pertamina Perkapalan, as a national shipping company in Jakarta, Indonesia in 2019. Some of the problems found were; The occupational safety and health was not maximized, the crew occupational motivation was still low during the voyage, the performance of the crew during sailing was not optimal. The study was conducted at Pertamina Perkapalan, Jakarta using quantitative methods, with the respondents were taken based on census method of 94 people. Data is collected through instruments in the form of a statement sheet with a Likert scale model that has been tested. Methods of data analysis use linear regression analysis, simple correlation, partial or simultaneous and path analysis. Based on the results of the study show that there is a significant influence on occupational safety and health on the performance of ship's crew with work motivation as a mediating variable. Occupational safety and health programs need to be implemented as part of resource management in the company in a sustainable manner as an effort to increase the work motivation of the crew so that the crew feel safe and comfortable at work.

As a source of revenue for the state budget and a source of energy (particularly fuel) to drive various sectors of life, the oil and gas industry plays an important role in the Indonesian economy. The purpose of this study is to analyse the effect of crude oil prices on natural gas during the Covid19 Pandemic in Indonesia. The research method used is an explanatory method using the real price decomposition of crude oil introduced recently by Kilian ( 2009). This study develops four variables for the oil and natural gas market through a structural vector autoregressive model (SVAR). Based on the results of the analysis, hence some evidence is found that the crude oil market affects the natural gas market in Indonesia through a combination of changes in demand and not through changes in oil supply during the Covid-19 pandemic. The uncertainty of oil supply due to the Covid-19 pandemic has made the oil market shift to the natural gas market and increased the price of natural gas as the main substitute for oil. Meanwhile, changes in demand in Indonesia during the Covid19 Pandemic affected crude oil and gas prices, causing similar fluctuations in oil and gas prices.