Under 1904.31(a), which workers must I record on the OSHA 300 Log?
You must record work‑related, recordable injuries and illnesses for all employees on your payroll and for non‑payroll workers you supervise day‑to‑day. This includes labor, executive, hourly, salary, part‑time, seasonal, and migrant workers, and also covers employees who are not on your payroll if you provide day‑to‑day supervision. Note that owners of a sole proprietorship or partners in a partnership are not considered employees for these recordkeeping purposes. See the basic requirement in 1904.31(a) and the general rule at 1904.