Where does turnover collide?

The rate at which members of an organization leave it and have to be replaced, together with the decision process that leads a worker to quit. Mobley's 1977 Intermediate linkages in the relationship between job satisfaction and employee turnover traced the chain that runs from dissatisfaction through thoughts of quitting and an intention to leave to actual departure, giving the field its focus on turnover intention as the near cause of the act. The referent is people exiting a workforce, counted as a percentage of headcount over a year, and it is unrelated to sales flowing through a firm's books, the swapping of species in a habitat, or the breakdown and remaking of molecules in a cell.[1]

Unit

Departures as a percentage of the workforce over a period, usually a year

Recovery means

Replacement hiring refills the vacated roles, and lower turnover intention among those who stay slows further loss

Measured by

Computed as separations divided by average headcount, and predicted from surveyed turnover intention and job attitudes

A ratio measuring how many times a firm sells and replaces an asset over a period, most often its stock of goods: a high inventory turnover means goods move quickly relative to the amount held, and the same idea scales any asset against the sales it supports. Gaur, Fisher, and Raman's 2005 An econometric analysis of inventory turnover performance in retail services modelled how this ratio varies with margin, capital intensity, and sales surprise across retailers. In British usage the bare word also names a firm's total sales revenue for the year. The referent is the velocity or volume of business measured in money, and it has nothing to do with staff resigning, species replacing one another, or proteins being rebuilt.[2]

Unit

Cost of goods sold divided by average inventory, as times per period; or total annual sales revenue

Recovery means

Not applicable

Measured by

Read from financial statements as the ratio of sales or cost of goods sold to the average asset balance held

The change in which species are present as one moves from one place or time to another: species turnover is the part of biological difference between communities that comes from some species being replaced by others, as distinct from one community simply holding a subset of another. Baselga's 2010 Partitioning the turnover and nestedness components of beta diversity separated this replacement component from nestedness, sharpening how ecologists split overall community difference. The referent is the gain and loss of species in an assemblage, quantified by dissimilarity indices, and it shares nothing with workers quitting, money moving through accounts, or molecules being synthesised and degraded.[3]

Unit

The replacement share of dissimilarity between two communities, on a zero-to-one scale

Recovery means

Colonization by new arrivals offsets local losses, so a community can hold roughly steady richness while its membership changes

Measured by

Estimated from species lists using dissimilarity indices whose turnover component is isolated from nestedness

The continuous cycle in which the body's molecules, especially its proteins, are broken down and rebuilt even when their total amount looks constant, so that the pool is being renewed rather than sitting still. Waterlow's 1984 review Protein turnover with special reference to man set out how synthesis and degradation are measured with labelled tracers and how their balance governs whether tissue is gained or lost. The related idea of an enzyme's turnover number counts how many substrate molecules one enzyme converts per unit time. The referent is molecular renewal inside living tissue, tracked in grams of protein per day, and it is a different thing entirely from staff departures, sales ratios, or the reshuffling of species in a habitat.[4]

Unit

Mass of a protein synthesised and degraded per unit time, such as grams per day

Recovery means

Not applicable

Measured by

Quantified with isotopically labelled amino acid tracers that reveal rates of synthesis and breakdown