Originally Posted by HR Pro

If you're asking the government it's closer to 10,000! In my experience a small company is usually under 100. At 100 you hit the compliance wall and have to start submitting employment reports to the government, create an affirmative action plan, etc etc. Although I've seen it vary depending upon the type of company, generally "they" say you need one HR person for every 100 employees. So when you have an HR dept instead of an HR person, you need to start managing certain things in a bigger company manner.