The collection has staff details from wage books, time books and insurance books. These are registers of those employed at the original site at which Jameson Irish Whiskey was distilled until 1971.
While Ancestry notes there are over 1 million records the information is scant. Names are often just surname and an initial, and sometimes just “Mr Smith.” You’ll find in which department J Smith worked, how much they were paid, insurance paid, etc. If you can identify your person you may be able to discern the period(s) they were employed.