WORLEY LIMITED — Capital/Financing Update 2012

Mar 22, 2012

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Level 12, 141 Walker Street North Sydney NSW 2060 Australia Telephone: +61 2 8923 6866 Facsimile: +61 2 8923 6867 www.worleyparsons.com WorleyParsons Limited ABN 17 096 090 158

23 March 2012

ASX Release

WORLEYPARSONS LIMITED

(ASX: WOR)

WorleyParsons awarded EPCM contract for major copper concentrator project

WorleyParsons has been awarded the engineering, procurement and construction management (EPCM) contract for the delivery of the Tsagaan Suvarga copper-molybdenum concentrator project for the Mongolyn Alt (MAK) Corporation. MAK is the largest privately owned company in Mongolia and has significant interests in mining, construction materials, real estate, and other industries.

The Tsagaan Suvarga project is located in Southern Mongolia and will include a 14.6 million tonne per annum copper-molybdenum concentrator and associated infrastructure including a 280km power line.

WorleyParsons’ scope of work will be delivered from its Brisbane office with support from other WorleyParsons offices in China and Ulaanbaatar, Mongolia. The expected revenue to WorleyParsons from this contract is approximately AUD65 million.

John Grill, Chief Executive Officer, commented “Having recently opened an office in Ulaanbaatar, WorleyParsons is committed to securing a long-term presence in Mongolia and to playing a major role in the development of Mongolia’s natural resources and infrastructure. The Tsagaan Suvarga EPCM contract award supports this strategy.”

For further information please contact:

Andrew Wood Group Managing Director – Finance / CFO Ph: +61 2 8923 6866 www.worleyparsons.com

Geoff Fowlstone Fowlstone Communications Ph: +61 2 9955 9899 Mob: +61 413 746 949 geoff@fowlstone.com.au