Half the workforce turned out to protest

Monday saw the second day of industrial action at the company in a matter of weeks.

Ifor Williams Trailers employs 400 at its factories in Cynwyd, Bala and Corwen, and staff are particularly angry that they do not receive extra payments for night shifts.

The company has refused to comment about the latest action, but union officials were quick to hit out at the way negotiations have been handled.

"My view is that they have not tried to bargain in good faith," he said.

"They made one offer back in April and they have not moved one iota from that offer."

Disappointed : union rep Dave Cliff

More than 150 workers and former employees took part in a rally on Sunday to draw attention to their grievances.

Workers met in Cynwyd and marched to Edeyrnion Hall in Corwen where the independent Wrexham AM, John Marek, was among the speakers supporting their cause.

Ifor Williams Trailers was founded in 1958, and manufactures agricultural trailers and horseboxes which are sold throughout the UK and abroad.

More than half of the employees are members of the GMB, the union representing a range of production and service sectors and trades.

Dissatisfied with recent negotiations with management officials, the union has decided to call a strike on Monday - the second walkout in a matter of weeks.

Negotiations involving the conciliation service ACAS have so far failed to resolve the dispute.

The workers marched through Corwen

The union says it sent a request to the firm more than three weeks ago for more talks to try and reach an agreement, but has still not received a response.

In July, more than 200 workers stayed home in a one day protest over pay and working conditions.

Members took action over what the union called "a failure to reach agreement in this year's pay and condition review."

Ifor Williams Trailers Ltd said in a statement that the company deeply regretted that the GMB union has determined to strike over the current round of pay negotiations.