This study was carried out to investigate the job performance, perception of job importance, and job satisfaction in dietitians working in geriatric hospitals in Busan. A survey was conducted from April 28 to June 30, 2011, and the data were analyzed using the SPSS program. The age of over 41 group showed higher job performance in terms of sanitation and safety management than the age of under 25 group but showed lower job performance in terms of nutrition management than the age of 31∼40 group. The subjects who worked for shorter than 2 years at their present jobs showed the lower job performance in terms of menu management and accounting management than the other groups, whereas those who worked in ``over 200 bed`` hospitals showed the higher job performance in terms of sanitation and safety management than the others. The subjects who worked for longer than 6 years showed the higher job satisfaction in terms of communication and working environment than the others. Job performance showed a significant positive correlation with perception of job importance, whereas it showed no significant correlation with job satisfaction. More work experience correlated with a higher monthly income, and younger workers showed higher job performance. Younger age and more work experience at a present job correlated with a higher perception of job importance. More work experience at a present job, higher monthly income, and shorter work experience were correlated with higher job satisfaction. These results suggest that it would be effective to adopt training programs for appropriate nutrition service and provide continuous education programs for professional development.