Crossword Puzzle Office error!

Clue: Office error!

Office employee (e.g. BILLER with 6 letters)
Office pest (DESKTOPMOUSE with 12 letters)
Takes in at the box office (GROSSES with 7 letters)
Speak in error (MISSTATE with 8 letters)
Only Secretary of Defense to be asked to remain in office by a newly elected President (ROBERTGATES with 11 letters)
Golf error (SLICE with 5 letters)
Office Depot rival (STAPLES with 7 letters)
Confectioner's office? (SWEETSUITE with 10 letters)
Sign on E.L.'s office door? (THEDOCTOROWISIN with 15 letters)
Hard-copy error (TYPO with 4 letters)