Supplemental Deferred Savings Plan

EXHIBIT 10(iii)A(36)


AMENDMENT NO. 3

TO

ACUITY BRANDS, INC.

SUPPLEMENTAL DEFERRED SAVINGS PLAN


THIS AMENDMENT made as of this 2 nd day of October, 2004, by ACUITY BRANDS, INC. (the " Company" );

W I T N E S S E T H :


WHEREAS, the Company maintains the Acuity Brands, Inc. Supplemental Deferred Savings Plan (" Plan" ); and


WHEREAS, the Company desires to amend the Plan to change the way all or a portion of the amounts credited to a Participant' s Account are deemed to be invested;


NOW, THEREFORE, for and in consideration of the premises, the Plan is hereby amended, effective as of December 31, 2004, as follows:


1.

Section 4.1(a) is hereby amended by deleting the last two sentences of the present section, and substituting the following in lieu thereof:


" The amounts credited to a Participant' s Deferral Subaccount shall be credited with earnings as provided in Section 4.1(d)."

2.

Section 4.1(b) is hereby amended by deleting the second paragraph of the present section, and substituting the following in lieu thereof:

" The amounts credited to a Participant' s Matching Subaccount shall be credited with earnings as provided in Section 4.1(d)."

3.

Section 4.1(c) is hereby amended by deleting the second paragraph of the present section, and substituting the following in lieu thereof:

" The amounts credited to a Participant' s Supplemental Subaccount shall be credited with earnings as provided in Section 4.1(d)."


4.


Section 4.1(d) is hereby amended by deleting the present section in its entirety and substituting the following in lieu thereof:


" (d) Crediting of Earnings on Accounts . Effective as of ...