And, unsurprisingly, they couldn't wait to test out her big spinning red chair!!
Taking to Instagram, Una shared a few snapshots from her 'bring your family to work' day.
One showed her two-year-old Aoife-Belle looking right at home in the red chair, cute! While another showed rugby pro Ben trying his hand at playing coach.
Alongside her photo of her beau, Una joked: "Bring your husband to work day!"
And it seems Ben quite enjoyed acting as his wife during his time on set of The Voice of Ireland, sharing a similar photo to his own Instagram account, along with the caption: "I would make an excellent Coach/ judge! #redchair #thevoice #lookingforwork."
While working on the talent show - now in its quarter-final stages - Una has been staying in her native Ireland and was recently joined by Ben.
The couple are parents to newborn Tadgh too, and while there were no cute pictures of him in his mum's red chair - Una did share a sweet snap of her baby boy and his dad together.
Next to her picture of Ben cradling his mini-me, she said: "Reunited @ben_foden #tadhg #fatherandson."
Una and Ben welcomed their second child earlier this year in February, with Ben confirming their son's safe arrival on Twitter shortly after his birth.
He said: "Tadhg John Foden has been born! Mum and baby are both amazing and healthy. He has a full head of hair and his mummy's lips! #babybenuna."
Since then, the couple have been getting used to being parents of two and Una has said she can't believe how quickly her newborn is growing. Speaking about Tadhg recently, she told fans: "Can't believe this little lad is 2 months old already! #Tadhg."
Isn't he a cutie?!
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