To sign off is to give final approval to a piece of work. Sign off the accounts, waiting for somebody to sign off, sign off the design.
It puts a name against the decision, which is the point of asking for it. A second sense is to end a broadcast or a letter, which is where the phrase came from.
1phrasesign offTo give final approval to a piece of work.
“The director has to sign off anything over ten thousand.”
sign off is a phrase.
Practised in Office & Admin