I would have also suggested a pivot table, and have done so in other posts.
But it seems like everyone are so hellbent on using SUMPRODUCT for all
conceivable problems that it would only fall on deaf ears...

"Smilingout_loud" wrote in
message ...
you could use a Pivot Table with mutiple consolidation ranges (i.e. your
33
tabs)

Or the very manual approach you could put (copy/paste) all 33 periods data
into one tab having the columns labeled and sort the data by employee,
then
use 'Data -Subtotals' to provide totals by each change in employee
identifier, using the Sum function - good luck

"cdshon" wrote:

I have a workbook with 33 sheets representing 33 pay periods. I have a
list
of 3900 employees who were paid during the year. How can I summarize
the
data by employee to get a total for the year? Not every employee was
paid
every pay date.