How rethinking deadlines could save managers time and money
Managers may be overestimating the time it takes to complete a task—and overpaying contractors in the process.

A column bar chart plotting the amount of time it takes to complete a task, with minutes on the y-axis and three deadline scenarios on the x-axis. In a short-deadline scenario, study participants acting as managers estimated the task would take about three minutes and forty five seconds to complete, while other participants acting as workers actually completed it in about two minutes and fifteen seconds. In a long deadline scenario, managers estimated six minutes and forty five seconds, while workers finished in two minutes and forty five seconds. And when there was no deadline, managers estimated six minutes, while workers completed it in two minutes and fifteen seconds.

A long deadline makes managers think a task is more involved.

  • Managers work under deadlines to complete projects. They plan tasks for employees and budget for the amount of time each one will take. But managers could be suffering from a bias when estimating the time a worker needs to perform a task, according to Chicago Booth’s Oleg Urminsky and PhD student Indranil Goswami.
  • Managers are heavily influenced by deadlines, say the researchers. A long deadline makes managers think a task is more involved, so they tend to allow more time than necessary.
  • To simulate a corporate environment, the researchers asked some participants in a series of studies to assume the role of workers while others acted as managers.
  • In one study, workers given more time to complete a puzzle took only slightly more time to do so than those given less time (see chart). However, a longer deadline made most managers expect that workers would take much longer than they actually needed.
  • This bias can lead managers to overpay contractors. In another study, most managers chose a flat-fee contract over a time-based one for tasks with a longer deadline. But managers could have saved money by opting for a time-based contract instead, because a project with a longer time limit may not take as much time as its deadline suggests.

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