Washington: The Abu Dhabi Investment Authority (ADIA), one of the world's largest institutional investors, has hired Burson-Marsteller to provide global communications services. Work includes building and supporting ADIA's corporate communications abilities; creating a program to portray ADIA as an 'employer of choice;' helping brand ADIA among a select audience as a top global investor; developing a crisis-management plan; and providing management with senior PR counsel on 'relevant trends and developments.'