DOMTAR UNVEILS "PAPER BECAUSE" CAMPAIGN TO PROMOTE THE RESPONSIBLE USE OF PAPER

       Far-Reaching Campaign Highlights Domtar's Environmentally Sound,
           Sustainable Practices and Paper's Key Role in Our Lives

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    UFS (NYSE, TSX)

MONTREAL and FORT MILL, SC, Sept. 23 /PRNewswire-FirstCall/ - A sweeping campaign designed to highlight the importance of paper in our lives will debut Monday.

Domtar Corporation (NYSE/TSX: UFS) is launching its "Paper Because" campaign through advertisements that will appear in major U.S. and Canadian media outlets, including: The Wall Street Journal, The New York Times, The Globe & Mail, Fast Company, Audubon, National Geographic and other consumer and trade publications. The campaign will also feature online banner ads and a series of short videos that will appear in a variety of online media.

"There are times when no substitute for paper will suffice - it is how great ideas begin, how the world learns, how important news gets shared and how people meaningfully connect with each other," said John D. Williams, President and Chief Executive Officer. "What has evolved over time is the continued improvement of our environmentally sound forestry practices and high levels of recycling that have made Domtar a leader in the effort to make paper sustainable and renewable."

Domtar has earned the support of recognized environmental organizations because of its investments to increase forest certification and reduce the environmental impact of its operations. More than three quarters of the energy used at Domtar mills, for example, comes from renewable sources. Domtar has also cut greenhouse gas emissions from continuing operations by 32 percent since 1990, far exceeding the requirements of the Kyoto Protocol.

"The Rainforest Alliance has been working with Domtar for more than a decade, and Domtar has raised the bar for the paper industry when it comes to increasing the supply of fiber from responsibly managed forests, certified to the standards of the Forest Stewardship Council(TM)," said Rainforest Alliance President Tensie Whelan. "Domtar's commitment to FSC(R) certification has made it possible for the Rainforest Alliance to work with forest managers to improve environmental and social conditions on ecologically important forestland and for consumers to easily find FSC(R) certified paper products."

Domtar's "Paper Because" campaign will demonstrate that paper is sustainable, personal and purposeful:

    - It's easier to learn on paper, because reading on paper is up to 30
      percent faster than reading online.
    - Nearly 60 percent of senior executives prefer print versus online
      information.
    - Three out of four people have made a purchase as a result of direct
      mail.
    - Paper is one of the most recycled products on the planet; more than 63
      percent of the paper that's used gets recycled.
    - Domtar collaborates with the Rainforest Alliance and other
      environmental organizations to encourage environmentally sound,
      sustainable forestry practices, high levels of recycling and the use of
      renewable energy at its manufacturing facilities.

"Domtar has been at the forefront of the responsible use of paper because the future of our business is linked to a healthy environment and the availability of both virgin and recycled fiber," said Mr. Williams. "We're not just a paper company. We're a sustainable paper company."

For more information, please visit www.paperbecause.com.

About Domtar

Domtar Corporation (NYSE/TSX:UFS) is the largest integrated manufacturer and marketer of uncoated freesheet paper in North America and the second largest in the world based on production capacity, and is also a manufacturer of papergrade, fluff and specialty pulp. The Company designs, manufactures, markets and distributes a wide range of business, commercial printing and publishing as well as converting and specialty papers including recognized brands such as Cougar(R), Lynx(R) Opaque Ultra, Husky(R) Opaque Offset, First Choice(R) and Domtar EarthChoice(R) Office Paper, part of a family of environmentally and socially responsible papers. Domtar owns and operates Domtar Distribution Group, an extensive network of strategically located paper distribution facilities. The Company employs over 9,000 people. To learn more, visit www.domtar.com.

SOURCE DOMTAR CORPORATION