That's what I was saying about each state being different - even Ohio and Washington, being state run plans, have different rules, rates etc.After 1 year an employer in Ohio is eligible for group rating.
The basic theory holds: insurance is a 'pool', based on expected losses and expected premiums (plus overhead, and profit for for-profit companies) from companies within that 'pool'. Office workers pay a lower rate because there is a lower history of injuries for that type of work, among all companies who perform that work. When companies pay a high premium, it is based on the historical and statistical data for that type of work, so when they complain, they have to look around themselves. Really large companies, in some states, can 'self-insure', creating their own 'pool', and pay the direct costs of their work related injuries, but they have to be able to absorb millions of dollars in potential, catastrophic costs.
I remember being at a safety meeting, several years ago, where the risk manager for a well known company was complaining about Minnesota comp rates for his industry. He represented the largest (and practically only) employer in that industry by far in the State. I could barely keep contain myself from standing up and asking who 'set' those rates.
*But, since you mention Ohio and Minnesota, many people would be surprised to hear that both of those states give out money to companies to help pay for some safety related expenses! The programs are different, so you need to look up the details. In Ohio, I think that you have to do a demonstration project and share the results:
https://www.bwc.ohio.gov/employer/programs/safety/empgrants.asp.
In Minnesota, it is a matching grant up to $10,000 (e.g. if the company spends $6,000, the State may match that $6,000, up to a maximum of $10K), and they may pay for more, standard, safety expenses:
http://www.doli.state.mn.us/wsc/Grants.asp
Other states may have programs, so it is worth looking into for things like: harnesses, fall protection/rescue equipment, training classes, barricades/warning lights, machine guarding, first aid equipment, etc. Maybe even a mini-skid steer. Could pay for the cost of your annual Arboristsite subscription . . . .
Philbert