Media Statement From Onex

Toronto, Ontario - June 10, 2005 -- Onex Corporation Managing Director
Nigel Wright responded today to the ratification of its contract by the
International Brotherhood of Electrical Workers (IBEW) represented employees
at Boeing Commercial Airplanes.
"We are very pleased with the result of the vote," said Mr. Wright. "The
IBEW members and leadership took an important step towards bringing new
investment, new customers, new work, new jobs, and greater job security to the
Wichita facility."
As previously announced, Onex anticipates completing the acquisition of
Boeing Commercial Airplanes in June.

Onex Corporation (Toronto: OCX.SV) is a diversified company with annual
consolidated revenues of approximately $18 billion and consolidated assets of
approximately $13 billion. Onex has global operations in service,
manufacturing, and technology industries. Its operating companies include
Celestica Inc., Magellan Health Services, Inc., ClientLogic Corporation,
Cineplex Galaxy LP, J.L. French Automotive Castings, Inc., Res-Care, Inc.,
Emergency Medical Services Corporation, Cosmetic Essence, Inc., Center for
Diagnostic Imaging, Inc., and Radian Communication Services Corporation. Onex
shares trade on the Toronto Stock Exchange under the stock symbol OCX.SV.

For further information:  Ted Glickman - 816-512-2380
                          Fleishman-Hillard, Inc.

For more information on Onex Corporation, visit its Web site at
www.onex.com.
For the latest information on the proposed acquisition of the
Wichita/Tulsa Division, visit www.midwesternaircraft.com.
This news release may contain forward-looking statements that are based on
management's current expectations and are subject to known and unknown
uncertainties and risks, which could cause actual results to differ materially
from those contemplated or implied by such forward-looking statements. Onex is
under no obligation to update any forward-looking statements contained herein
should material facts change due to new information, future events, or
otherwise.
As of its date, this press release contains all material information
associated with this event.

All amounts in Canadian dollars unless otherwise stated