Groundless rumour that there's unemployment? (4,6)

I believe the answer is:

idle gossip

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'there's unemployment?' is the definition.
I don't know anything about this answer so I cannot judge whether this works.

'groundless rumour' is the wordplay.
'groundless' becomes 'idle' (synonyms).
'rumour' becomes 'gossip' (I have seen 'Scandalous rumour' mean 'gossip' so perhaps 'rumour' could also mean 'gossip').
'idle'+'gossip'='IDLE GOSSIP'

'that' is the link.

Can you help me to learn more?

(Another definition for idle gossip that I've seen is " Conversation".)

I've seen this clue in The Globe and Mail, The Irish Independent and The Irish News.

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