This study verifies the influence of staff job satisfaction on client orientation and organizational performance. Based on the investigation on the effects of casino employee’s customer centered attitude, it establishes the measures to improve workers’ job satisfaction and maximize the business results while offering some insights. For the investigation, the population targets the employees of the foreigner exclusive casinos in Seoul and Busan. And it uses convenience sampling method and questionnaire survey with the sample, the staffs in G and P corporations among the population. The data had been collected from March 2, 2019 to March 31, 2019. The respondents of the questionnaire were given information about the contents in advance and 200 copies of the questionnaire were distributed. The final statistical analysis used 182 copies retrieved. It processed the collected data with data coding and data cleaning by SPSS 22.0 for Windows statistics package program. Casino industry is the typical service business that heavily depends on human resources as well as a core of tourist industry. As Asian nations are investing casino facilities for tourism development, job creation, tax revenue security and economic development, casino market faces rapid changes and intensive competitions. In order to gain an advantage over foreign casino corporations and ensure sustainable growth in the infinite competition of global casino industry, the efforts should be preceded to improve job satisfaction of casino employee.