Ashley Herd spent 20 years working in HR.Lola ScottAshley Herd has noticed four traits good employees have in common during her time working in HR.Dependability, strong communication, problem-solving, and teamwork are key to job security.But even with these traits, layoffs can occur due to decisions by investors and boards.This as-told-to essay is based on a conversation with Ashley Herd, the 43-year-old founder and CEO of Manager Method in Atlanta.