If the operation is a construction operation, then the training requirements are at 1926.454. Assuming that the employees are already trained, retraining requirements are in 1926.454(c) and say:
When the employer has reason to believe that an employee lacks the skill or understanding needed for safe work involving the erection, use or dismantling of scaffolds, the employer shall retrain each such employee so that the requisite proficiency is regained. Retraining is required in at least the following situations:
- Where changes at the worksite present a hazard about which an employee has not been previously trained; or
- Where changes in the types of scaffolds, fall protection, falling object protection, or other equipment present a hazard about which an employee has not been previously trained; or
- Where inadequacies in an affected employee’s work involving scaffolds indicate that the employee has not retained the requisite proficiency.
