The deal means the 30,000 Lotto stores across Italy can now make payments through the Western Union money transfer system to 500,000 locations in 200 countries, Lottomatica said this week.
Lottomatica shares were down 2.2 percent, with the broader market down 2.7 percent.
New York-listed Western Union is a world leader in international payment systems, which made 226 million transactions worldwide in 2011 of a total of us$ 86 billion in capital as well as 425 million commercial payments.