Whole Foods uses the heat map and related scores to determine where stores must take action to address risks, according to the documents and people familiar with the map.
Overall, higher scores indicate lower risks of unionization. The map monitors three main areas: "external risks," "store risks," and "team member sentiment."
Some of the factors that contribute to external risk scores include local union membership size; distance in miles between the store and the closest union; number of charges filed with the National Labor Relations Board alleging labor-law violations; and a "labor incident tracker," which logs incidents related to organizing and union activity.
Other external factors include the percentage of families within the store's zip code that fall below the poverty line and the local unemployment rate.
Store-risk metrics include average store compensation, average total store sales, and a "diversity index" that represents the racial and ethnic diversity of every store. Stores at higher risk of unionizing have lower diversity and lower employee compensation, as well as higher total store sales and higher rates of workers' compensation claims, according to the documents.
Amazon-owned Whole Foods is quietly tracking its employees with a heat map tool that ranks which stores are most at risk of unionizing
Stores' risk scores are based on more than two dozen metrics, including racial diversity, employee turnover, and "tipline" calls.