Caterpillar and United Auto Workers 974 are preparing for layoffs in East Peoria. About 100 full-time workers received indefinite layoff notices to take effect January 19th. 20 additional agency workers assignments were also cut. Caterpillar says the layoffs are to bring production in line with demand. The giant earth moving tractor made at the East Peoria facility is used in mining. That industry continues to show weak market conditions.