Nurses have reported experiencing horizontal abuse and bullying (e.g., bullying by other nurses) and perceive that workplace bullying results in errors. Using posts from the social media site Reddit, researchers sought to understand who perpetrates the abuse, types of abuse, perceived reasons, nurses’ responses, and location of abuse. Organizational strategies such as mindfulness, reshaping the culture, bystander interventions and explicit leadership support are suggested to prevent nurse co-worker abuse.