The idea would be to have an npc in towns that allows you to create a parcel that acts as a contract to be given to another player.
player a gives the contract broker 30 gold (maybe a bit more as payment to the broker) as collateral to be protected for an hour or two by whoever accepts their task.
now another player can sign the contract where they will be payed the gold if that player is not killed in that time frame.
perhaps other contracts could be made as well but this one could help to ensure players are protected by those who agree.
player a gives the contract broker 30 gold (maybe a bit more as payment to the broker) as collateral to be protected for an hour or two by whoever accepts their task.
now another player can sign the contract where they will be payed the gold if that player is not killed in that time frame.
perhaps other contracts could be made as well but this one could help to ensure players are protected by those who agree.