For instance you have a contract with FARM A to haul their organic tomatoes every year to market, but this year the neighboring farms pesticides affect the crop of FARM A and they lose their organic certification and therefore experience economic losses.
FARM A can sue in negligence but can the truck driver?
Indeterminacy of liability becomes the issue, meaning FARM B does not know what contracts FARM A has with whom and for how much for there to be a direct liability to the truck driver what is required is knowledge. Perre v Appand (1999) 198 CLR 180.
If however the truck driver had put neighboring properties on notice that they had the contract with FARM A and perhaps offered their trucking services to neighboring properties on the basis of economies of scale (since you are in the area anyway) then even if FARM B did not accept your services they were aware of them and that you would be affected if they did something negligently that caused damage to FARM A. Marsh v Baxter (2015) WASCA 169.