Crossword Puzzle Typical office hours

Clue: Typical office hours

Seven or eight hours, typically (GOODNIGHTSSLEEP with 15 letters)
Typical office worker (DESKJOCKEY with 10 letters)
During office hours (DAYS with 4 letters)
1876 opera that typically lasts five hours or longer (GOTTERDAMMERUNG with 15 letters)
Office hours (NINETOFIVE with 10 letters)
Like the midafternoon hours, typically (WARMEST with 7 letters)
Had office hours (WASIN with 5 letters)
Ran for office, e.g. (VIED with 4 letters)
Post office onslaught (JUNKMAIL with 8 letters)
Shaped like Obama's office (OVAL with 4 letters)