No, OSHA does not require annual fall protection training. However, per 29 CFR 1926.503(a), employers must provide fall protection training to workers exposed to fall hazards. The training should help workers recognize fall hazards and follow appropriate safety procedures to mitigate them.Retraining is required when there are significant changes in workplace conditions or when an employee's performance suggests they have not retained the necessary knowledge. This is outlined in 29 CFR 1926.503(c).Employers should ensure that training is revisited when needed, and though there is no fixed requirement, it is typical to undergo retraining approximately every two years.