Great question! These issues come up a lot when outsourcing. Without knowing more specifics, here are a few general tips. 1. Hire direct if possible- When going through an agency or a third party company, details can get lost and the person doing the work will likely not be as dedicated as someone you hire directly (has been my experience multiple times). Even if it's a short term project, there are many people looking for part-time or short term work. 2. Screen share videos- These are gold! The more you can document the process the better what you receive back will be and then you will have it for the next person! 3. Make sure you have some basic quiz in place as part of your hiring process to know the level of English the person your dealing with has, as well as any other required skills. 4. The time difference issue can generally be worked around, in the countries where the vast majority of outsourcing happens, people are more than happy to work the clients hours. I have this as a requirement for new employees and have never had anyone refuse an offer because of it.

Hope that helps, I'd love to chat to discuss further. Best of luck!