@russellxu For an APPLICATION for a job, yes. 20 hours is far too much. After having a chance to speak with the hiring manager to make sure the job is for me - the right opportunity, reward, culture, team, etc - then sure, I'll put far more effort in.

If you were going to be my manager and I found out that you expect me to put in 20 hours of work just to even APPLY, then I think you've told me everything I need to know about what it's like to work for you.

You both seem to be forgetting that this is a two-way street.