YORK, Pa. (AP) _ Union officials have called an end to a three-day strike by more than 1,400 United Auto Workers union members at a Caterpillar parts plant here.

The workers walked off the job Thursday afternoon to protest what they said was the company's harassment of union shop steward George Erbe, 47, to the point where he was hospitalized with chest pains.

UAW Local 786 president Barry Koicuba said Saturday that Erbe was recovering at home.

Plant spokesman Jeff Hulfish did not return phone calls left at the plant Saturday evening. Caterpillar has said it was not harassing Erbe. The company said it was performing a time study to determine why efficiency levels had dropped on one manufacturing line.

Caterpillar officials kept the plant in operation through the weekend by using about 400 salaried employees. Koicuba said members of his local would return to work on Sunday.