Anxious worker safely evacuated (5)
I believe the answer is:
antsy
'anxious' is the definition.
(I've seen this in another clue)
'worker safely evacuated' is the wordplay.
'worker' becomes 'ant' (worker is a type of ant).
'evacuated' says to hollow out the word (remove centre letters).
'safely' with its centre removed is 'sy'.
'ant'+'sy'='ANTSY'
(Other definitions for antsy that I've seen before include "excited?" , "Eager" , "nervous" .)