businessman working late in office

40 40s 45 adult alone attention business businessman busy career color computer concentrating consideration copyspace corporate corporation day desk desktop determination determined employee employmant european focus focusing fourties glasses grey handsome holding image indoor interest involved issue job late lifestyle light look looking man mature night office one overtime person professional project room screen seated serious severe severity single sit sitting solution solve solving stockphoto task thinking thoughtful tie tired trouble troubled unsmiling work working workplace worried years