Ayu, D., Chairunnisa, C., Azizi, H.A., Malau, N. and Hasibuan, P.M. 2024. APPLICATION OF ERGONOMICS TO IMPROVE HEALTH AND WORK PRODUCTIVITY IN CLASS A MEDAN SEARCH AND RESCUE OFFICE. HEARTY. 12, 2 (Apr. 2024), 371–376. DOI:https://doi.org/10.32832/hearty.v12i2.16344.