Vital engagement has been described as a focused, meaningful, and active relationship with work across one’s lifetime (Nakamura, 2001, 2014). Theoretically, vital engagement goes beyond short-term interest and engagement in one’s work, representing instead an ongoing, homeostatic sense of engagement that sustainably occurs across years and decades. However, it is unclear how vital engagement manifests in the modern workplace. In the footsteps of Nakamura (2014), we present the VIVA model, which conceptualizes sustainable work engagement as comprised of four mutually reinforcing elements: virtue, involvement, vitality, and acceptance. We first describe the rationale and conceptual underpinnings of the model. Then, we provide a preliminary empirical test of the model using archival data collected from a panel of school staff (N = 327) assessed five times over a three year period. Based on available data, the VIVA domains were operationalized as strengths use, work-related flow experiences, subjective vitality, and a sense of meaning in life. Using structural equation modelling, results provided preliminary support for the hypothesized model, which was relatively stable over time despite changes and challenges occurring in the school. The construct was strongly correlated with but distinct from other wellbeing measures. Although additional testing with measures that specifically align with the four theoretical dimensions is needed, the results support the relevance of the VIVA model in defining specific domains that can be supported in the workplace to help employees sustainably thrive.