EE was descending ladder. Forgot to untie ladder from anchor, re-ascended and untied it. EE then descended again. EE thought EE was at the bottom, stepped down not realizing there was still one rung of the ladder, lost balance and braced self by grabbing the ladder with right arm. Pain in EE's right shoulder began at the time. Restrictions were given to EE on 4/21/2020.