EXHIBIT 1
AGREEMENT
JOINT FILING OF SCHEDULE 13D
The Undersigned hereby agree to file jointly the Statement on
Schedule 13D (the "Statement") relating to the Ordinary Common Stock, $0.01 par
value per share, of Magellan Health Services, Inc., and any amendments thereto
which may be deemed necessary pursuant to Regulation 13D or G promulgated under
Section 13 of the Securities Exchange Act of 1934, as amended.
It is understood and agreed that a copy of this Agreement
shall be attached as an Exhibit to the Statement, filed on behalf of each of the
parties hereto.
This Agreement may be executed in multiple counterparts, each
of which shall constitute an original, one and the same instrument.
IN WITNESS WHEREOF, each of the undersigned has executed this
Agreement as of the [15th] day of January, 2004.
MAGELLAN HOLDINGS LP
By: ONEX PARTNERS LP, its General
Partner
By: ONEX PARTNERS GP LP, its
General Partner
By: ONEX PARTNERS GP INC., its
General Partner
By: /s/ Xxxxxx Xx Xxxxx
----------------------------------
Name: Xxxxxx Xx Xxxxx
Title: Vice President
ONEX PARTNERS LP
By: ONEX PARTNERS GP LP, its General
Partner
By: ONEX PARTNERS GP INC., its
General Partner
By: /s/ Xxxxxx Xx Xxxxx
----------------------------------
Name: Xxxxxx Xx Xxxxx
Title: Vice President
ONEX PARTNERS GP LP
By: ONEX PARTNERS GP INC., its General
Partner
By: /s/ Xxxxxx Xx Xxxxx
----------------------------------
Name: Xxxxxx Xx Xxxxx
Title: Vice President
Page 19 of 29 Pages
ONEX PARTNERS GP INC.
By: /s/ Xxxxxx Xx Xxxxx
----------------------------------
Name: Xxxxxx Xx Xxxxx
Title: Vice President
ONEX CORPORATION
By: /s/ Xxxxxx Xxxxxx
----------------------------------
Name: Xxxxxx Xxxxxx
Title: Authorized Signatory
XXXXXX X. XXXXXXXX
By: /s/ Xxxxxx Xxxxxx
----------------------------------
Name: Xxxxxx Xxxxxx
Title: Authorized Signatory for
XXXXXX X. XXXXXXXX
Page 20 of 29 Pages