Pole saving company, is that lucky? (6)
I believe the answer is:
mascot
'is that lucky?' is the definition.
(mascots are used for luck)
'pole saving company' is the wordplay.
'pole' becomes 'mast' (mast is a kind of pole).
'saving' means one lot of letters goes inside another.
'company' becomes 'co' (abbreviation).
'mast' going around 'co' is 'MASCOT'.
(Other definitions for mascot that I've seen before include "Good-luck item" , "Team's good luck bringer" , "Symbolic lucky figure" , "It's adopted, by a team say, as a symbol" , "One is lucky" .)