These are generally fraudulent check scams whereby yuo recieve a check and are asked to cash it, deduct a percentage for y9ourself and send the balance by some international service to them.
Problem one - If you get caught trying to cash a check that is fraudulent, you can wind up in jail in any case you certainly will be liable for the funds when the bankc discover then check is a fruad if you do cash it.
Problem two - you are aiding and abetting in a criminal activity
Problem three- under US lawa you are not employed buy these people so don;t offer the argument that you were carrying out an employer's instructions
Problem four - no-one is going to believe that you were not suspicious of an overseas company who purports to be doing business in the US yet can't avail itself of modern electronic money transfer methods - come on - no legitimate concern uses unknown people as check cashers - one check at a time!
Problem Five - it's illegal so know that you are breaking the law and they are getting away with the money and you are traking all the risk.
Problem six - no decent compnay woould hire you sight unseen from a list of resumes with no idea of who you are, what you do, no idea of your background andno way of tracing you!
Problem seven - if they have your detials inc your banking details, they may try stealing your identity and you will never catch them because you have no idea where 'they' are!!