WORLEY LIMITED — Capital/Financing Update 2008

Jun 5, 2008

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Level 7, 116 Miller Street North Sydney NSW 2060 Australia Telephone: +61 2 8923 6866 Facsimile: +61 2 8923 6877 worleyparsons.com WorleyParsons Limited ABN 17 096 090 158

6 June 2008

2 ASX Release

0 WORLEYPARSONS LIMITED

1 (ASX: WOR)

WorleyParsons announces C$ 47.5 m acquisition of Westmar Consultants Inc. – Marine & Port Facility, Resource & Mining Infrastructure Specialist

WorleyParsons is pleased to announce the acquisition of Westmar Consultants Inc. (“Westmar”), a leading Canadian based marine and port facility, resource and mining infrastructure, bulk material handling and transportation specialist.

Westmar’s capabilities complement WorleyParsons’ existing Infrastructure and Minerals & Metals experience in port & marine infrastructure, marine and coastal, pit to port mine development, specialist expertise in materials handling such as sulphur and coal, and high value transport areas.

The acquisition price of C$47.5 million represents a multiple of 5.5 times pro forma EBITDA (earnings before interest tax depreciation and amortization) of Westmar for the twelve months ended 30 April 2008. The acquisition is expected to complete prior to 30 June 2008 and is expected to be accretive to future earnings. The acquisition will be debt funded.

Westmar has a strong reputation for its work in both Canada and international markets. Providing a diverse range of engineering and consulting services in a wide variety of disciplines, Westmar’s fields of practice include port and terminal planning and design, bulk material handling, maritime and offshore structures, industrial structures, coastal processes, bridges and civil structures, site development and utilities, electrical and controls, and inspections.

Westmar’s clients include many major mining companies such as Rio Tinto, BHP Billiton, Western Canadian Coal and a range of clients in both the public and private sectors.

With over 275 professional staff, Westmar operates offices in Canada and on the Northwest coast of North America. The Canadian head office is located in Vancouver, British Columbia and the US head office is in Seattle, Washington.

Commenting on the acquisition, WorleyParsons Chief Executive Officer, Mr. John Grill, said “The acquisition of Westmar is an important step in growing our Infrastructure and Minerals & Metals capabilities in both Canada and other markets. We have been very pleased with the performance of our Canadian operations in recent years and believe that Westmar will be a great addition to the business.”

Also commenting, the President of Westmar, Mr. Stan Cowdell, said: “Joining the WorleyParsons team offers Westmar’s clients and staff substantial opportunities to grow and expand our business. This merger of complementary talent will enable Westmar to grow geographically while adding to our core technical areas of expertise enabling us to provide our clients with a more comprehensive service both domestically and internationally.”

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Level 7, 116 Miller Street North Sydney NSW 2060 Australia Telephone: +61 2 8923 6866 Facsimile: +61 2 8923 6877 worleyparsons.com WorleyParsons Limited ABN 17 096 090 158

About WorleyParsons

WorleyParsons is a leading provider of professional services to the energy, resource and complex process industries. WorleyParsons’ business has been built by working closely with customers through long-term relationships, anticipating their needs and delivering inventive solutions through streamlined, proprietary project delivery systems. With over 27,700 employees in 105 offices and 34 countries, its service capability covers the entire project lifecycle: from identifying the opportunity to the operating phase.

For further information please contact:

David Housego Chief Financial Officer Ph: +61 2 8923 6866 www.worleyparsons.com

Geoff Fowlstone Fowlstone Communications Ph: +61 2 9955 9899 Mob: +61(0) 413 746 949

geoff@fowlstone.com.au