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NORTH AMERICAN ENERGY PARTNERS ANNOUNCES DECLARATION OF

QUARTERLY DIVIDEND

Edmonton, Alberta, September 15, 2014 – North American Energy Partners Inc. (“NAEP” or “the Company”) (TSX: NOA) (NYSE: NOA) today announced that its Board of Directors has declared a quarterly dividend (the “Dividend”) of two Canadian cents ($0.02) per common share, payable to common shareholders of record at the close of business on September 30, 2014. The Dividend will be paid on October 21, 2014 and is an eligible dividend for Canadian income tax purposes.

About the Company

North American Energy Partners Inc. (www.naepi.ca) is the premier provider of heavy construction and mining services in Canada. For more than 50 years, NAEP has provided services to large oil, natural gas and resource companies, with a principal focus on the Canadian Oil Sands. The Company maintains one of the largest independently owned equipment fleets in the region.

For further information contact:

David Brunetta, CMA

Director, Investor Relations

North American Energy Partners Inc.

(780) 969-5574

dbrunetta@nacg.ca

www.naepi.ca

Since 1953 • Heavy Construction & Mining

Suite 300, 18817 Stony Plain Road Edmonton, Alberta T5S 0C2 Canada Phone 780.960.7171 Fax 780.969.5599