payroll

What will benefit a medium business the most? outsourcing or offshoring? I understand the difference of both but still I'm worried and confused which will help medium business like us the most? I'm thinking or offshoring/outsourcing our payroll.

I'm considering a contractor payroll processing company like FreeSpirit or LesterAssociates to cover me on payroll and visa services. I am a geologist and commonly only find short contract work, not long term visas. Can anyone share experiences with payroll service companies? What are typical...