American Airlines has sent notice of layoffs to 469 employees. Three hundred fifty-three of the jobs will be cut at Chicago's O'Hare International Airport with the rest of the cuts coming from four other airports. The majority of those being laid off are service clerks and the union representing those workers was notified last Thursday. The airline is expanding its "voluntary bridge to retirement program" that will offer workers over the age of 50 a $12,500 severance payment and additional benefits.