Possible Clues:

• It's not hard to sit in
• It's large and comfortable to sit in
• Lounge feature
• Failing to tax office furniture
• Furnishing simple church music
• Simple job for a teacher in a comfortable position
• It's comfortable to sit in - sounds like it
• Arise achy from this? Surely not!
• Academic sinecure to fall back on?
• Item of furniture, loose one skirted by cleaner