Person-centred care has been shown to have positive outcomes for patients and for staff. However, the complexity of the link between structural conditions, work in a person-centred manner and outcomes for staff is insufficiently described. We tested the relationship between structural empowerment and psychological empowerment, as mediated by nursing home staff members’ self-ratings of working in a person-centred manner, the person-centred climate and thriving. Questionnaires were distributed to staff working in 12 nursing homes in Sweden. A serial mediation model was tested. The results showed that higher access to structural empowerment was related to higher psychological empowerment mediated by staff working in a more person-centred manner, improved person-centred climate, and improved staff ratings of thriving. These results point to the importance of strengthening the preconditions for staff to work in a person-centred manner and nursing home managers play an important role in this.