She worked as a senior district nurse in the Therapy Department No. 2 of the Baranovichi Central Polyclinic. Over time, Olga's career progressed even further—she became the central polyclinic's head nurse , essentially supervising the entire nursing staff.
In 2021, Kozlovskaya was recognized at the regional level, receiving an honorary diploma from the Main Healthcare Department of the Brest Regional Executive Committee.
