497 1 ei011608supp.txt CLASS Z STICKER January 16, 2008 Pioneer Equity Income Fund Supplement to the JUly 6, 2007 Class Z Shares Prospectus The following supplements the section entitled "Basic information about the fund - Principal investment strategies": The fund may invest up to 20% of its total assets in equity and debt securities of non-U.S. corporate issuers and debt securities of non-U.S. government issuers. The fund will not invest more than 5% of its total assets in the securities of emerging markets issuers. Investing in non-U.S. issuers may involve unique risks compared to investing in securities of U.S. issuers. These risks are more pronounced for issuers in emerging markets or to the extent the fund invests significantly in one region or country. These risks may include: o Less information about non-U.S. issuers or markets may be available due to less rigorous disclosure or accounting standards or regulatory practices o Many non-U.S. markets are smaller, less liquid and more volatile. Pioneer may not be able to sell the fund's portfolio securities at times, in amounts and at prices it considers reasonable o Adverse effect of currency exchange rates or controls on the value of the fund's investments or its ability to convert non-U.S. currencies to U.S. dollars o The economies of non-U.S. countries may grow at slower rates than expected or may experience a downturn or recession o Economic, political and social developments may adversely affect the securities markets o Withholding and other non-U.S. taxes may decrease the fund's return 21609-00-0108 (C) 2008 Pioneer Funds Distributor, Inc. Underwriter of Pioneer mutual funds Member SIPC