The number of hours to be dedicated to a particular work depends on the subject, content, amount of words, and the research required to write it. Normally a one pager of A4 size takes one day. A transcript takes about a week. A matter of 5000 words takes 10 days. But timelines are adjustable as per client needs. That is what we learn with Japanese culture - work for the customer deadline.
Payment to be agreed before start of work. Would expect payment to be delivered within 3 days of submission of work. Defaults are not liked.
The mode of communication between us can be mail or skype call or a phone call from your side. Normally speaking clarifies things faster.
Whatever questions I ask at the start of job may please be answered; that helps producing a quality work. All matter from your side will be kept confidential. Similarly it is expected that my content is not copied, passed on to other clients, or used for any other purpose than what it is meant for.
In case during the course of work I find that that some more time may be required, I will inform you accordingly and agree on a new deadline. But such a situation is rare. I will let you know wherever I need some literature or research material from your side.