I just finished a legal research job. The results were not as he'd hoped. He acted ok but later sent a message with attached picture saying Upwork wouldn't let him pay until the end of work week. Is he right; this hasn't happened to me yet...Thanks in advance!
On hourly contracts, provided you correctly tracked your time (DID YOU?) while working, the client is automatically charged on Monday for the hours you tracked.
There is nothing the client needs to do. You track your time, your tracked hours are in your work diary, client is billed and charged on Monday for all hours in your work diary for the current week.