This is an instance where
OSHA does not intend to inspect your work site (which is consistent with this being a low-priority complaint). However, cut-resistant
PPE is required to be provided by the employer.
The remark about a tree-cutting plan would indicate to me that it was an employee-based complaint. General public would not be privy to the existence of such a plan, though someone could infer one does not exist if it doesn't appear appropriate
PPE and precautions are being taken.
It doesn't taken an employee to file a complaint though. An
OSHA inspector could be driving down the highway and spot hazardous work being performed, or a safety-oriented member of the general public could see it and
call it in.
In general, you (as an employer) are responsible for your employees, whether they
express health and
safety concerns to you about their work or not. It's certainly more egregious if they ask for
PPE or
safety precautions and they are refused, but whether they ask or not does not change that you are responsible for their well-being.
In that regard, it's a
bit of a moot
point if your employee filed the complaint or not. So long as there was truth in what the complaint contained, it needs to be addressed.
I would recommend emphasizing to your staff that at any time if they feel their work is unsafe or that they should have additional
PPE or that additional precautions be taken in their work, that they should come to you and say so. That way, if you should ever incur an
OSHA investigation, you have at least a little
ground to stand on if an employee files a complaint about something that they didn't first come to you with. Having a general umbrella
safety plan like "If you see something, say something" helps curb some of the more oddball issues like tree-cutting that are better addressed on a case-by-case basis. The case-by-case basis only works though if your employees know they can come to you with their concerns.