Pax World Funds Series Trust I
Supplement Dated August 15, 2012
to the Prospectus dated May 1, 2012

Effective August 15, 2012, the name of Pax World Global Green
Fund changed to Pax World Global Environmental Markets Fund.
Accordingly, each reference in the Prospectus to Pax World Global
Green Fund is hereby replaced with Pax World Global
Environmental Markets Fund.

1.  The following paragraph replaces the first full paragraph on
page 46 of the Prospectus, under the heading "Investment
Objective" and the first full paragraph on page 66 of the
Prospectus, also under the heading "Investment Objective":
The Global Environmental Markets Fund's investment objective is
to seek long term growth of capital by investing in innovative
companies around the world whose businesses and technologies
focus on environmental markets, including energy (alternative
energy and energy efficiency); water (water infrastructure and
technologies, pollution control); and waste (waste management and
technologies, environmental support services).

2.  The following paragraph replaces the first paragraph on page 48
of the Prospectus:
The Global Environmental Markets Fund invests in companies
whose businesses and technologies focus on environmental
markets, including energy (alternative energy and energy
efficiency), water (water infrastructure and technologies, pollution
control) and waste (waste management and technologies,
environmental support services). The Global Environmental
Markets Fund's portfolio manager selects equity securities on a
company-by-company basis primarily through the use of
fundamental analysis. The Global Environmental Markets Fund is
not constrained by any particular investment style, and may
therefore invest in "growth" stocks, "value" stocks or a
combination of both. Additionally, it may buy stocks in any sector
or industry, and it is not limited to investing in securities of a
specific market capitalization.

3.  The following paragraph replaces the third paragraph on page
48 of the Prospectus:
The Global Environmental Markets Fund seeks to invest in
companies with positive overall environmental, social and
governance (ESG) performance.

4.  The second sentence of the last paragraph on page 67 of the
Prospectus is replaced by the following sentence:
In this regard, the Fund invests in companies whose businesses and
technologies focus on environmental markets, including energy
(alternative energy and energy efficiency), water (water
infrastructure and technologies, pollution control) and waste (waste
management and technologies, environmental support services).

5.  The third full paragraph on page 72 of the Prospectus is
replaced by the following:
In addition to our other sustainability or ESG criteria, the Global
Environmental Markets Fund has a particular focus on
environmental markets - investing in companies whose businesses
and technologies focus on environmental markets, including
energy (alternative energy and energy efficiency), water (water
infrastructure and technologies, pollution control) and waste (waste
management and technologies, environmental support services).







Pax World Funds Series Trust I
Supplement Dated August 15, 2012
to the Statement of Additional Information dated May 1, 2012

Effective August 15, 2012, the name of Pax World Global Green
Fund changed to Pax World Global Environmental Markets Fund.
Accordingly, each reference in the Statement of Additional
Information to Pax World Global Green Fund is hereby replaced
with Pax World Global Environmental Markets Fund.

1.  The following language is inserted following "Emerging
Market Securities" on page 13 of the Statement of Additional
Information:
ENVIRONMENTAL MARKETS
Under normal circumstances, Pax World Global Environmental
Markets Fund invests at least 80% of its net assets plus any
borrowings for investment purposes (measured at the time of
purchase) in companies with businesses and technologies focused
on environmental markets.  To the extent required by Rule 35d-1
under the 1940 Act and the SEC's interpretive positions
thereunder, shareholders will be provided with sixty days notice in
the manner prescribed by the SEC before any change in this policy.
Environmental markets include, without limitation, energy
(alternative energy and energy efficiency); water (water
infrastructure and technologies, pollution control); and waste
(waste management and technologies, environmental support
services).