NIOSH investigators assessed worker exposures to noise during the post-Hurricane Katrina relief effort. Six of the fourteen workers monitored exceeded the NIOSH REL, and one exceeded the OSHA AL. Workers who exceeded the NIOSH REL included a worker passing out tickets to trucks bringing in debris, a forklift driver supplying construction material to roofers at a naval air station, a veterinarian, a veterinary assistant, and two veterinarian technicians providing care to canines at a temporary outdoor animal shelter. One of the veterinarian technicians also exceeded the OSHAAL. NIOSH investigators recommended use of hearing protection devices to protect workers exposed to high noise levels.