The Finnish National Patient Data Repository requires all health care professionals to document patient data with a uniform structure. The aim of the study was to gather the experiences of Occupational Health nurses for the usefulness and the ease of use of national patient data structures in electronic health records. The study was carried out in summer 2017. 177 OHNs participated in the study. The respondents felt that the use of the national patient record structures improve the quality of work but doesn't enable to accomplish tasks more quickly. Without patient data and the fluent health information exchange, the patient treatment pathways do not operate properly. The development of patient data structures in EHRs have to be continued.