Ainsworth Announces New Labour Agreement with Unionized Workers at Barwick, Ontario Mill

24.8.10

NEWS RELEASE – Friday, August 20, 2010

Vancouver, British Columbia – Ainsworth Lumber Co. Ltd. (TSX: ANS and ANS.WT) announced today that it has reached a new 4 year labour agreement with unionized workers at its Barwick, Ontario mill. Members of the Communications, Energy and Paperworkers Union of Canada (CEP), Local 324-99, ratified the agreement late last night. The previous contract expired July 31th 2009.

The new labour agreement, which involves 135 employees at the Barwick mill, was reached without any work stoppage or production disruption.

For further information, please contact:

Ainsworth Lumber Co. Ltd.
Suite 3194, Bentall 4
P.O. Box 49307

1055 Dunsmuir Street
Vancouver, B.C. V7X 1L3
Telephone: 604-661-3200
Facsimile: 604-661-3201
www.ainsworthengineered.com

Investor Relations Contact:
Bruce Gibson
bruce.gibson@ainsworth.ca