A fourth major manufacturer has chosen to cut costs by introducing a 30-hour week for its 160 employees.
The shorter working week comes into effect on Monday.
Hetronic Malta, which produces radio remote control equipment, was acquired last month by Methode Electronics, the same company that launched a four-day week just two days ago.
Methode Electronics is a global designer and manufacturer of electro-mechanical devices and employs around 600 workers at its Malta-based factory.
The reason given in both cases was a severe reduction in orders brought on by the current inter-national economic climate, since both companies deal in export.
Workers outside the factory at the Mosta Technopark refused to speak to The Times about the matter, saying they were instructed not to give comments to the media.
In a company announcement, Hetronic said consultations were held with the director, Department of Industrial and Employment Relations, and the workers.
"The situation will be closely monitored by management who will continue to keep employees regularly informed as to whether this measure may be stopped prematurely or whether an extension or further measures may be necessary," the company said.
It added that banks were stepping in to help the employees with their home loan arrangements. No further details were given.
Hetronic Malta is the largest production plant of the US-based Hetronic group and was set up 13 years ago.
A fortnight ago Trelleborg Sealing Solutions Malta also put its workers on a four-day week and Toly Products dismissed 84 workers last week.