April 28 is Workers' Memorial Day. Workers' Memorial Day, annually celebrated on April 28, honors those who have been fatally injured.As a response, the National Safety Council (NSC) has released six of the top safety concerns on which companies should focus."Workers' Memorial Day is a time to remember those who lost their lives on the job, to reflect on lessons learned and to bolster our commitment to worker safety," said Mark P. Vergnano, chairman of the NSC board and president and CEO of The Chemours Company, in a statement. "We believe every injury is preventable, and by drawing attention to these critical areas we can improve employee safety, while remembering those we have lost."According to the organization, certain populations of workers and those in certain situations are at a higher risk of being injured or dying at the workplace.To view the six safety concerns the NSC is highlighting, click through the slideshow.