WORLEY LIMITED — Capital/Financing Update 2017

May 9, 2017

Level 15, 141 Walker 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

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10 May 2017

ASX Release

WORLEYPARSONS LIMITED

(ASX: WOR)

Ontario Power Generation awards agreement to WorleyParsons

WorleyParsons has been awarded the Nuclear Owner’s Support Services Agreement by Ontario Power Generation (OPG) (Agreement) for a five (5) year term with options for two additional five (5) year terms.

Under this new Agreement, WorleyParsons will provide operations, maintenance and technical services and owner’s support services including work protection, projects and modifications, radiation protection, preventative maintenance, regulatory support and engineering support services.

OPG produces electricity from two nuclear power plants named Pickering and Darlington Power Stations with a combined generating capacity of about 6,600 megawatts. The services provided under the Agreement will support the continued operation of Pickering Power Station to 2024, the Darlington Station Journey of Excellence, the Darlington Refurbishment Project and OPG’s Western Waste Management Facility operations.

“This Agreement is an important and strategic win for our nuclear business and maintains our strong Canadian footprint as a full spectrum nuclear service provider. We look forward to continuing our relationship with OPG,” said Andrew Wood, Chief Executive Officer of WorleyParsons.

For further information please contact:

Mark Trueman

Director Planning & Investor Relations Ph: +61 2 8456 7256 investor.relations@worleyparsons.com

www.worleyparsons.com

About WorleyParsons: WorleyParsons delivers projects, provides expertise in engineering, procurement and construction and offers a wide range of consulting and advisory services. We cover the full lifecycle, from creating new assets to sustaining and enhancing operating assets, in the hydrocarbons, mineral, metals, chemicals and infrastructure sectors. Our resources and energy are focused on responding to and meeting the needs of our customers over the long term and thereby creating value for our shareholders.

WorleyParsons is listed on the Australian Securities Exchange [ASX:WOR].