Following brief strike, call staff building (6)

'staff building' is the definition.
The definition and answer can be both acts as well as being singular nouns.
Perhaps you can see a link between them that I can't see?

'following brief strike call' is the wordplay.
'following' is a charade indicator (letters next to each other).
'brief' means to remove the last letter (a shorter or briefer version of the word).
'strike' becomes 'hit' (synonyms).
'call' becomes 'ring' (telephone call).
'hit' with its last letter taken away is 'hi'.
'hi'+'ring' is 'HIRING'.

Can you help me to learn more?