SAO PAULO, Nov 13 (Reuters) - Meatpacker JBS SA's plans to launch a dual listing have been slowed after the company's American Depositary Receipt (ADR) holders requested to vote on the proposal, causing the firm to rework what had been submitted to the U.S. Securities and Exchange Commission and send a new framework for scrutiny, its CEO said on Monday.

In an telephone interview, CEO Gilberto Tomazoni said as soon as the U.S. regulators have no more questions on the modified proposal, the company can call a shareholders' meeting to decide on the dual listing in New York and Sao Paulo.

He declined to give a timeline for conclusion of the process, which the company had hoped to close this year. (Reporting by Roberto Samora Writing by Ana Mano Editing by Chris Reese)