Data on employee retention is the collection of metrics that measure how well a company is retaining its employees. It includes statistics such as average length of service, turnover rate, voluntary versus involuntary attrition, and net job gains or losses. To put it simply, data on employee retention tells us how many people stay with a given organization and for how long. This data can be used to determine whether an organization is doing enough to attract and retain talent, or if changes are necessary to improve retention rates. Knowing the data around employee retention can help companies create better working environments and make informed decisions about personnel investments.