Purpose: The research is conducted to determine key drivers of Innovative Work Behavior and measure the influence of Innovative Work Behavior on Work Role Performance by collecting opinions from Viettel's staffs. Through key findings, Viettel's managers could strategically plan to encourage employees' innovation and boost their performance as well as organizational achievements.Design/ method/ approach: Questionnaires using Likert scale are designed on the basis of literature review and distributed to employees currently working in Viettel Group by convenience sampling. To analyze data, the software programs IBM SPSS and IBM AMOS are employed. IBM SPSS provides Reliability Analysis to test internal consistency, and Exploratory Factor Analysis to comprehend dimensions and patterns of factors. Likewise, IBM AMOS offers Confirmatory Factor Analysis to scrutinize the Goodness of Fit of the Measurement model and Structural Equation Modelling to produce regression weights.Findings: The results suggest that Compensation System, Training and Development, Sharing Information, Supportive Supervision and Innovative Environment are positive correlated with Innovative Work Behavior. Innovative Work Behavior, similarly, has a positive effect on Work Role Performance.Originality/ value: The Measurement model using maximum likelihood method proves trustworthy with unidimensionality, construct validity and indices of good fit passing recommended cut-off points. The sample may therefore be generalized to represent population. In addition, users of the research findings can be both university managers and undergraduates. Keywords: Innovative Work Behavior, Work Role Performance, Structural Equation Modelling.