The Yamaguchi District Court ruled Wednesday that Mazda Motor Corp.'s temp-staff employment practice is illegal and recognized regular employee status for 13 former temp-staff workers displaced by the automaker.

The rare recognition that displaced temporary workers should be regular employees is expected to affect similar pending lawsuits. The court also ordered Mazda to pay wages that the 13 should have received as regular employees.

The temp-staff worker law requires companies to directly employ workers dispatched by temporary staffing agencies if the employees continue work at the firms for three consecutive years.