This paper examines the impact of corruption on employers' efficiency in Vietnamese firms. The Generalized Least Square (GLS) estimation method was used for data sets surveyed for Vietnamese firms in 63 localities. The research results show that the unofficial costs in the industry and the total informal costs accounting for 10% or more of revenue will negatively affect the labor efficiency of these enterprises. For costs related to administrative procedures, businesses accept to pay these fees in order to save waiting time and it contributes to increase the efficiency of employers in businesses. In addition to the corruption factor, the study also shows that the number of employees, the location of operation, the average value of fixed assets per employee and the return on equity also affect the efficiency of use. employees in Vietnamese enterprises.

The study aims to explore the impact of internal social capital banking on the operations of commercial banks in Vietnam. The study is executed in two phases. Phase 1 uses the expert method to build scales and design survey questions. In phase two, scale test and structural equation model analysis (SEM) are performed with a sample of 243 questionnaires for directors and deputy directors of branches of 32 commercial banks in Ho Chi Minh City. It also analyzes the contribution of the structure of the relational network within the bank and the quality of the relational network. The research results show that internal banking social capital affects all three operations; namely mobilization, lending and service provision of the banks. Based on the research results, the study proposes an analytical framework to improve the quality of internal banking relationships.

This study conducted a survey on 243 branches of 32 commercial banks in Ho Chi Minh City in 2016 to explore and measure the composition of social capital affecting capital activities, using capital activities and service provision activities of commercial banks. The paper uses Exploratory Factor Analysis (EFA), CFA affirmation analysis and the Structural Equation Modeling (SEM). The results show that social capital directly affects all three activities of commercial banks. In addition, the study found that capital activity has a direct impact on using capital, activities of using capital directly affect the provision of services, and capital activities indirectly impact on service provision.