Employee Turnover

See turnover for other uses of the term. Turnover, in a human resources context refers to the characteristic of a given company or industry, relative to rate at which an employer gains and loses staff.If an employer is said to have a high turnover, it most often means that employees of that company have a shorter tenure than those of other companies in that same industry. Similarly, if the average tenure of employees in a particular sector is lower than that in other sectors, that sector can be said to have a relatively high turnover.
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Noun
1. the ratio of the number of workers that had to be replaced in a given time period to the average number of workers
(synonym) turnover rate, turnover
(hypernym) ratio

the rate at which employees are hired and terminated; it is is used as a measure of staff contentment.