Given the detrimental effects of burnout for individuals and organizations, it is of crucial importance to better understand the self-initiated actions employees take to prevent burnout. While such proactive burnout prevention is likely to reduce burnout complaints, these activities may also be frustrated by high burnout levels. This means that proactive burnout prevention and burnout can negatively affect each other over time. The present study used a four-wave longitudinal panel design to investigate temporal relationships between proactive burnout prevention and burnout over 3, 6 and 9 weeks. Participants were 165 employees in the financial services industry who provided data on all four measurement occasions. The outcomes of structural equation modelling provided support for the hypothesized combined effects model compared to the lagged and reversed effects models. The findings suggest that proactive burnout prevention can help to prevent burnout, while engagement in these behaviours may be hindered by high initial levels of burnout. Employees should therefore intervene before their resource pool becomes too depleted and they lack the energy or mental strength to invest resources, in order to proactively retain or regain resources. K E Y W O R D S burnout, prevention, proactive behaviours, temporal relationship 1 | INTRODUCTION Burnout has deleterious consequences for individuals' health and wellbeing and organizational outcomes (e.g., Maslach et al., 2001; Salvagioni et al., 2017), indicating the need for burnout prevention.Burnout refers to a work-related state of exhaustion that is characterized by of extreme tiredness, cognitive and emotional impairment, and mental distancing (De Beer et al., 2020;Schaufeli et al., 2019).Whereas burnout prevention interventions initiated by the employer have previously been studied (Awa et al., 2010;Maricuţoiu et al., 2016), less is known about the self-initiated actions employees can take to prevent burnout (Demerouti, 2015). This is remarkable, since the consequences of burnout for individuals physical health and psychological wellbeing can be detrimental (e.g., Type 2 diabetes, depression; Salvagioni et al., 2017) Therefore, it is important to improve our understanding of employees' proactive actions to prevent burnout. Meta-analytical reviews have shown that employerinitiated burnout prevention programs have a lasting, yet small effect This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.