Missed nursing care (MNC) is an indicator of poor quality. This study surveyed nursing assistants (NA) and registered nurses (RN) in three surgical wards in Sweden about the types of and factors associated with MNC. The most frequently missed tasks, reported by both RNs and NAs, included not attending interdisciplinary care conferences and not performing ambulation three times per day. Nearly a quarter of RNs and NAs intended to leave within the year. Given the most frequently endorsed reason for missed nursing care is understaffing, and that a quarter of staff intend to leave within the year, interventions aimed at reducing nurse turnover may reduce missed nursing care.