Training and developmental opportunities are important to long-term loyalty, and the more that companies can spend, the better, according to a recent report by WorldatWork.

While 59 percent of respondents say they receive at least $1,000 each year to spend on external development initiatives, such as joining associations, attending conferences and outside training, this is not enough for some. In fact, respondents who are most loyal to their employers are more likely to receive at least $2,500 for development opportunities.

"Employers can easily differentiate themselves by investing in their employees' career development," says Bonnie Kabin, CCP, vice president of professional development for WorldatWork. "Even a relatively small employer investment has a positive impact on loyalty. Managing employee perceptions of career development opportunities is key to enhancing engagement and loyalty."