Worker's Compensation question

[Barb Negley]

Looking for direction....

I am an investor, doing spec homes, flips, and vacation rentals in Teller County. 

Last year my insurance gal told me I HAD to have worker's comp.  Which I have never had but I did get.  I have a flip I am getting ready to start, working with a new GC and when I asked him for a copy of his Worker's Comp and to add my business as an "additional insured" he said "We don't have any employees outside of us owners, so we don't have Workers Comp. I can send you a liability cert or a waiver of workers comp if needed."  

I am wondering why I would need WORKER'S COMP when I do not have any employees similar to my GC.  Is there another form of insurance that would be sufficient?  Last year I paid around $5000 for Worker's Comp and will have my first audit in  October 2022.

I would love some insurance education and appreciate any direction you could give!

Thanks in advance!

Barb