This study asks whether grammatical and mechanical errors bother business professionals, which of these types of errors are most bothersome, and whether such errors affect perceptions of the writer and their ethos. We administered a 17-question survey to roughly 100 business professionals whose roles are not primarily writing and communication within organizations. The findings show that business professionals are bothered by these errors and that the level of bothersomeness has increased from previous studies. Additionally, the findings show that participants have clear views of writers who make errors and that the context of the error matters. The authors conclude by offering implications for technical and professional communication.