Over 1,200 jobs are supported both directly and indirectly by the Liebherr organisation in Killarney.
That includes the container factory in Fossa, hotels and work for sub-contractors.
A book on the history of Liebherr Container Cranes in Ireland is due to be published next year; the Fossa plant was established in 1958.
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Tom Foley, a former HR manager with the company for 46 years, spent the past three years putting the book together.
He explains the importance of Liebherr to the economy of Killarney: