Mac Dickinson Concrete is the latest business to have their safe stolen in the early hours of the morning, with a front end loader again used in the robbery.
The incident follows last week's ram raid on the Carlo's IGA supermarket in Rose St where a front end loader was driven through the front wall of the supermarket and used to steal a safe.
In the latest incident, thieves entered the Vera Leap Rd premises at 3am on the morning of December 24 by smashing the front door with an unknown item.
The office was ransacked, the safe dragged to the entry point and a front end loader belonging to the business was used to transport the safe to a utility.
An amount of cash and personal documents were stolen from the safe.
The small town has a population of just 2,100 and The Leader has been told business owners are growing concerned after the latest incident.
Barwon Local Area Command police are warning Wee Waa businesses to be vigilant when securing money, particularly overnight.
Barwon LAC Inspector Steve Laksa said police had gone around and spoken to Wee Waa business owners about safe money handling and storage strategies.
"Police are currently investigating links between both robberies," Inspector Laksa said.
"Don't hesistate in calling police if you see something or someone suspicious."