Deaths from workplace-related violence are on the rise nationally, although the overall number remains relatively small. Nationwide, 61 people were killed at their jobs by a co-worker in 2014, up from 49 in 2011, according to the most recent data from U.S. Bureau of Labor Statistics. The increase, workplace specialists say, reflects the growing anxieties among employees as wages stagnate, living costs rise, and on-the-job pressures intensify from companies operating with leaner staffs. In some cases, companies are not sensitive enough when they lay off or dismiss workers. Companies can help prevent workplace violence by treating people well, especially on the way out the door, security experts said. Some of the best-run companies warn employees in advance of cutbacks so workers can prepare.