I'm sorry I forgot to tell you about the formula on the Group Footer 2 and I'm glad you created it.
From the screenshot it seems the values are adding up correctly, however they don't reset.
I can say that because 1193.20 + all the values in Blue for the person 'Leandro Saclolo' = 3507
So all you need is the reset formula to work correctly. Are you sure the reset formula is in Group Header 2a or 2b and does it reset the variable emp_tot?
-Abhilash