logging labor hours: daily, weekly and overall totals

I have a spreadsheet that logs labor hours at a construction site that I manage. Essentially it is a sum of sums with daily, weekly, and overall totals. (see attached). As the project progresses i will need to add both laborers and task items. The spreadsheet must be dynamic such that the overall total formulas are updated without my having to go in and do it all by hand. I need to be able to add lines without going in and augmenting all of the formulas. If its easier to have each laborer category contain every task item thats fine, as rows / laborers can be hidden. Infact, thats how I see this working the easiest; each laborer hours group is a mirror of the others formula-wise. When a line gets added to a laborer category, the rest are also modified, as are the LABOR TOTAL boxes. Is there a good way to do this? thanks!