In Michigan, there are laws that protect a landowner from liability when allowing hunters on their property. If you hunt my land and get hurt, I am NOT at fault.
If you come on MY property to WORK, you MUST have an accident/property liability policy and I must have a printed proof of the policy before ANY work is performed...otherwise, the liability for injury/property damage becomes MY responsibility.(insurance policies can and do state that the issuer of the policy must be notified of anyone performing work on your property who does NOT carry their own liability/injury policy) In other words, even a fifteen year old kid mowing my lawn becomes a possible liability when he is on my property.
The idea of working to gain access SOUNDS great, but in reality it won`t work where I live.
Forgot to mention, the bigger farms in my area pay the workers who are on the payroll, running huge tractors, planting fields, harvesting, mowing hay, running the milking operations ect... minimum wage, with NO overtime pay. $12.00/ hour to perform ANY labor type job is probably about $2.00/hour over the average.