Staples Inc , the largest U.S. office supply chain, reported lower-than-expected quarterly revenue due to weak sales in Europe and North America.

Many investors look at office-supply retailers as a barometer of economic health because demand for their products is closely tied to white-collar employment rates.

The net income fell to $78.1 million, or 12 cents per share, in the fourth quarter ended February 2, from $283.6 million, or 41 cents per share, a year earlier.

Sales rose 3 percent to $6.56 billion, but missed Wall Street's average expectation of $6.72 billion, according to Thomson Reuters I/B/E/S.

(Reporting by Siddharth Cavalle in Bangalore; Editing by Saumyadeb Chakrabarty)