Municipalities, public schools and anyone employing "public sector" employees must complete an OSHA 300 log. The deadline is March 1 each year for public sector employers. Additionally, they are required to annually complete form SBD-10710 which is the same information that is on the OSHA 300A form. Unlike OSHA that requires completion of the log by companies that employ 10 or more employees, the Wisconsin Department of Commerce makes no distinction. Whether municipalities have 1, 100 or 1,000 employees, the log must be completed.