[jhowell]

> To me, it sounded like they were saying that when a developer works alone at nights or on the weekend, they cannot ask other members of the team, or the person who originally filed the ticket, any questions.

I think in response to the OP, the user identified the "problem." I've worked places where the above was the norm, and other places where if ticket showed up in front of a developer and required additional clarification (from QA or other developers) this would be covered in detail during sprint retrospectives, with the intention of making sure that the team works hard to make sure that this never happens. It can blow estimates not only for the given task, but can have cascading effects as well.

That said, this might not be easily attainable or the best practice for all organizations, but I think I prefer better processes over evening and weekend work.