"It is an undisputed fact that loss of productivity claims in construction are one of the most challenging claims to prove. Yet, there is not enough coverage on this important topic. For this reason, the Chartered Institute of Arbitrators (CIARB), Egypt Branch, is delighted to collaborate with the Association for the Advancement of Cost Engineering (AACE) International in this unique event, where international claims expert, James Zack, is interviewed by Waleed El Nemr regarding the AACE International Recommended Practice (RP) 25R-03 "Estimating Labor Productivity in Construction Claims." The event will be held in the Cairo Regional Centre for International Commercial Arbitration, where Mr. Zack will be interviewed online. Registrants will be granted access to the RP and will be given opportunity to ask questions, which will be answered during the interview. Looking forward to your registration and participation."