Please make reference in your description to the mutual credit module
http://drupal.org/project/mutual_credit
as I have made reference to this one.
Mutual credit 1.1 will fully support quarter-hour accounting, stats and form entry.
Nice idea to put the hours and the form in different modules - I only just realised this is the way forward.
Could you also state whether or not the accounting is done as mutual credit as this would affect the uptake of many potential users. Which is to say, when you give someone an hour, where does it come from, and how is it redeemed?
Matthew