5 UPS workers shared the toughest parts of their jobs: 'Sleeping on a truck four nights a week is rough'

5 UPS workers shared the toughest parts of their jobs: 'Sleeping on a truck four nights a week is rough'

Spencer Platt/Getty Images <ul><li>Business Insider talked to five UPS workers about the most difficult parts of their job.</li><li>The difficulties varied by role and included hot warehouses and mu… [+5534 chars]

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