loyalemployeesThese days, it’s not as common for employees to stay with one company for their entire careers, with people working at one place for an average of just 3.68 years.

So which companies hold on to their employees the longest? Seattle-based salary data company PayScale just ran a study analyzing data they obtained from Fortune 500 companies to find out which companies have the most and least loyal employees based on median employee tenure.

Amazon.com tied for second for the least loyal employees with a median tenure of one year, while Google tied for fourth with just 1.1 years of tenure on average. Apple, meanwhile, tied for 36th at two years. Here’s the bottom 20 companies on the list:

payscaleleastloyal

Microsoft, however, was all the way down the list tied for 259th with an average tenure of four years. In terms of the most-loyal employees, Kodak finished first with an average tenure of 20 years. Here’s the top 20 companies on the list:

payscalemostloyal1

Other Seattle companies worth noting: Starbucks (104th, 2.8 years), Boeing (315th, 4.6 years) and Costco (333rd, 4.8 years).

PayScale noted that it was complicated to create this ranking because of all the reasons why an employee stays or leaves a company. Median employee tenure was calculated from 250,000 profiles based on several data points, including:

  • Median age
  • Median years with employer
  • Total cash compensation
  • National median pay
  • Percentage of workers with low stress
  • Percentage of satisfied workers
  • Industry

See the report here, along with the full explanation of the methodology here.

Previously on GeekWire: Here’s what employees love, hate about working at Amazon, Microsoft

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