percent american workers leave paid vacation day unuse important new study release morning travel effect find percent american worker leave pay vacation day unused reason cite dread return vacation pile work percent belief able step job go percent able afford percent fear see replaceable percent american suffer work martyr complex say roger dow president ceo  USA  travel association busyness wear badge honor clearly need work hard work smart work time work martyr complex need way dictaphone typewriter green eyeshade relic workplace past okay like typewriter idea