On January 21, 2010, Department of Homeland Security Janet Napolitano designated Temporary Protected Status to Haiti because of the devastation caused by the January 12th earthquake. The designation applied to only Haitian nationals, who continuously resided in the United States on or before January 12, 2010. The final day to register for TPS was January 18, 2011. USCIS received over 60,000 TPS applications.
TPS was set to expire on July 22, 2011. However, the Department of Homeland Security extended TPS for Haiti until January 22, 2016. Haitian nationals with TPS had to re-register for TPS by filing another TPS application and employment application (without fees) during the selected re-registration period. Employment authorization was automatically extended to January 22, 2015.
You may be eligible to file a late initial application if you have never been granted TPS. See USCIS' page on TPS and ”Filing Late” for more information.