Higher institutions in Cross River State continue to experience a low level of staff development and a high rate of student enrolment. The study assessed the relationship between internal quality assurance and staff job performance in Cross River State. The study was guided by two research questions and two hypotheses. The research design used for this study was the cross-sectional survey research design. The population of the study consisted of 3870 staff. The sample size of the study consisted of 351 respondents. A questionnaire for Academic Staff on Internal Quality Assurance and Staff Job Performance (QASIQASJP) was used for data collection. The instrument yielded 0.76 as the logical validity index. The coefficient of internal consistency of 0.78 was obtained after pilot testing the instrument. The research questions were answered using the descriptive statistics of mean and standard deviation while the hypotheses were tested using Pearson’s Product Moment Correlation at 0.05 level of significance. The findings of the study showed that there was a significant relationship between staff development and job performance in public higher institutions in Cross River State and there was a significant relationship between Carrying Capacity Policy and staff job performance in public higher institutions in Cross River State. The study recommended that All the public tertiary institutions in Cross River State should be mandated by their various regulatory agencies to set aside special funds annually for staff development through their sponsorship for conferences and further studies to help the academic staff acquire knowledge and skills for effective job performance.