Growing evidence suggests that workload has an adverse effect on quality of care and patient safety in nursing homes. A novel job resource that may improve quality of care and patient safety and alleviate the negative effect of workload in nursing homes is team support for strengths use. This refers to team members’ beliefs concerning the extent to which the team they work in actively supports them in applying their individual strengths at work. The objective was to investigate the relationships between workload, team support for strengths use, quality of care, and patient safety in nursing homes. We collected (cross-sectional) survey data from 497 caregivers from 74 teams in seven different nursing homes. The survey included measures on perceived workload, team support for strengths use, caregivers’ perception of the quality of care provided by the team and four safety incidents (i.e. fall incidents, medication errors, pressure ulcers, incidents of aggression). After controlling for age, team size, team tenure, organizational tenure, and nursing home, multilevel regression analyses (i.e. individual and team level) showed that perceived workload was not significantly related to perceived team-based quality of care and the frequency of safety incidents. Team support for strengths use was positively related to perceived team-based quality of care, negatively related to medication errors, but not significantly related to fall incidents, pressure ulcers, and aggression incidents. Finally, we found that perceived workload had a negative effect on perceived team-based quality of care when team support for strengths use is low and no significant effect on perceived team-based quality of care when team support for strengths use is high. This study provides promising evidence for a novel avenue for promoting team-based quality of care in nursing homes.