Abstract
This study summarises the existing literature on Mindfulness‐Based Interventions (MBIs) and their effect on employee well‐being criteria and extends it by testing MBIs against a Mindfulness‐Strengths‐Based Intervention (MSBI). Given that extant MBIs focus on restoring well‐being, our first hypothesis was that MBIs would perform better on reducing negative emotional states than on promoting wellbeing. To test our first hypothesis, we conducted a secondorder meta‐analysis, which summarised 13 first‐order meta‐analyses (k = 311). MBIs had stronger effects on reducing negative emotions (g = −0.74) than on increasing well‐being (g = 0.58). Then, we conducted a follow‐up field experiment, comparing how an MSBI performed against an MBI on employee well‐being criteria...