The employee list offers every technician who has ever had labor flagged to them, whatever dates you have chosen, so it is possible to pick a name and get an empty report. The date box will not let you start earlier than the day your store's records begin.
Each line shows the INVOICE NUMBER the work was billed on, the EMPLOYEE NAME credited with it, the DATE the invoice was finalized, the VEHICLE (YEAR, MAKE, MODEL) it was done on, the LABOR DESCRIPTION as it appears on the invoice, the FLAG HOURS booked against that technician for that job, the TOTAL FLAT PAY those hours earn them, and the TOTAL LABOR ON INVOICE — what the customer was charged for the same labor. The last two are different numbers doing different jobs: flat pay is what the work costs you in wages, labor on the invoice is what it brought in. The report is always ordered by employee, then by invoice, then by date.
The table is banded rather than flat. A blue EMPLOYEE: ‹name› bar opens each technician's block. Within it, a grey INVOICE SUBTOTAL: row closes off each invoice, adding the flag hours, flat pay and labor for that invoice alone — useful where one invoice carried several labor items. A pale blue ‹name› - Employee Total: row closes the technician's block with their totals for the whole period. At the very foot of the table, a green GRAND TOTAL: row adds every technician together.
The green GRAND TOTAL adds up the page you are looking at, not the whole report. Where the report runs to more than one page — and over a wide date range with every employee it easily runs to hundreds — paging forward changes the figure. The printed PDF has no such limit: it covers the whole date range in one go. When the two disagree, the printout is the one to trust.
Lines whose labor was never assigned to anyone show a blank EMPLOYEE NAME, and because there is no name to group them under they appear without a blue bar and without an employee total, while still counting toward the figures above. A long run of blank names is worth chasing back to the invoices, since that labor is not reaching anybody's pay.
Flat pay on this report is the flat rate held against each labor line at the time the work was billed, so changing a technician's rate today does not rewrite what a past period already shows. The ADD TO FAVORITES switch beside the report title saves a shortcut to the report under your favourites in the main Reports menu.