OSHA Lockout Tagout Standard 1910.147(c) - Employee Retraining
While the employer is required to provide effective training for all employees covered by the LOTO standard, under section (c)(7)(iii) Retraining must be provided to all the authorized as well as affected employees depending upon the circumstances mentioned above.
There are three types of employees which must receive Training & Retraining: authorized, affected, and other. The amount and type of training/retraining that each employee receives is based upon the relationship of that employee's job to the machine and upon the degree of knowledge relevant to hazardous energies.
In addition, retraining must be conducted if an inspection reveals a lack of understanding of LOTO procedures by the employees. This is called Additional Retraining.
Whenever a periodic inspection discloses any deviations or inadequacies in the employees' understanding, additional retraining becomes mandatory.
Under section (c)(7)(iv) Employers are required to certify that effective training and retraining has been provided to all employees covered by the standard. The certification must contain each employee's name and dates of training.
Check OSHA Guidelines - https://www.safetylock.net/learn-lockout-tagout/osha-29-cfr-1910-147-standard/