How five days’ work goes into four 

Some workers may resist having a compressed workweek, with potentially longer hours and fewer breaks, imposed on them by an employer. Others may already be working at full tilt, meaning a shorter workweek could make their workload less manageable. “There are some employees who’ll end up trying to cram more work into four days where they previously had greater flexibility to work across five days,” says Harter. “If you get to Thursday afternoon, still haven't finished your work and everyone else has gone home, that can create stress and resentment.”