I don't want to state the obvious but just use a site like odesk or elance and have your freelancers join your team. Not only do you get protection for the work that gets done and a tremendous amount of reporting / accountability tools but they get the protection that if they do the work, they'll get paid.
It really cuts down the hassles and and questions that prevent most people from outsourcing and if you think about the 10% fee on oDesk you'll calculate it to be a minor surcharge on excellent productivity and accountability tools.
To give you an example, before India changed their payment rules about 4 years ago my vendors would tack on a 4% surcharge to paypal payments...and then India prevented payments over $500 so I switched to wire transfers that ended up costing me $40 per wire and about an hour per month per vendor to coordinate and verify.
I manage eleven outsourcers in six countries and I am the cheapest person that I know...and I still find a huge amount of value and protection by using these sites.
