Up to 40 people have lost their jobs after a building company in Powys ceased trading, says the union Unite.
Trade Manufacturing Facility (TMF) of Newtown made small buildings and ecopods, a form of cheap housing.
Unite said staff had turned up for work last week, but were told the company had stopped trading.
Administrators Smith and Williamson said it had been instructed to place the company into voluntary liquidation.
No-one at TMF was available for comment.
Howard Wright, of Unite in Newtown, said the jobs were reasonably well-paid and people would struggle to find similar work in the area.
He said: "The staff turned up for work as normal on 18 October to be told there was no work, and the shutters were coming down and the company was to cease trading.
Principal director
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People will find it difficult to find jobs like them in the locality”
End Quote Howard Wright Unite
"The workers have been made redundant. People are still waiting for wages from the last couple of weeks.
"These were not minimum wage jobs, they were quite well paid.
"People will find it difficult to find jobs like them in the locality, but the union is looking after its members in regard of their entitlements."
Mr Wright said a union meeting with the redundant workers would be held on Wednesday at 16:00 BST.
A Smith and Williamson spokeswoman confirmed that TMF stopped trading on 18 October and the workforce was dismissed by the "principal director".
She said the director instructed Smith and Williamson "to assist to liquidate the company", and statutory meetings of company members and creditors was likely to take place on the 25 November.
She added that these meetings would place TMF in creditors' voluntary liquidation, and would appoint the liquidator.
Smith and Williamson said it was not yet known how many people TMF employed. It is presently aware of 31 staff, but there might be 38.
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