Stop employing the French head of year - bad (6)

'stop' is the definition.
The answer and definition can be both acts as well as being singular nouns.
Perhaps you can see an association between them that I can't see?

'the french head of year bad' is the wordplay.
'the french' becomes 'la' (one of the French words for 'the').
'head of' indicates taking the first letters.
'bad' becomes 'off' (eg meat that's gone off is bad).
The first letter of 'year' is 'y'.
'la'+'y'+'off'='LAYOFF'

'employing' is the link.

Can you help me to learn more?