American Red Cross officials in the Louisville area say the recession has led some employers to cancel blood drives because they have fewer workers available to donate.Spokesperson Loni White says about three percent of the summer business drives that help supply blood to 56 hospitals in the region have been called off."Certainly we can't wait for a situation that looks like it could get worse to get worse, so we're just proactively going out there and trying to make sure people understand the importance of donating right now," White said.White says some special blood drives are scheduled for next month. Donors in Louisville can also visit Red Cross centers on North Hubbards Lane and on East Chestnut Street.