See Events at Chip Pearson's site

http://www.cpearson.com/excel/events.htm

look at the BeforePrint, BeforeSave and BeforeClose events.

You also might want to look at the selectionchange and change events.

--
Regards,
Tom Ogilvy

"Pilar" wrote in message
...
Users are downloading a spreadsheet where they should be filling in
important
values to HR such as Name, Last Name, Social Security, etc.
Besides there are other values such as Standard number of hours they work
(20, 37.5, 40, etc) that are being used to calculate overtime, benefits,
etc.
so they must be filled in.

Is there a way to make these fields required before printing/saving the
spreadsheet?
Thank you!