This study investigates the effects of hotel employees’ leader-member exchange on their job insecurity and knowledge sharing, and the effect of job insecurity on knowledge sharing. This research subjects were selected from employees of six international tourist hotels in Taiwan, 300 valid questionnaires were collected, and of which 218 are effective questionnaires, returns-ratio is 72.67%. The results are: (1) the stronger the employees’ leader-member exchange are, the lower their job insecurity will be; (2) the stronger the employees’ leader-member exchange are, the more their knowledge sharing will be; (3) employees’ job insecurity fail to predict their knowledge sharing.