Typically, only 4 percent to 8 percent of eligible workers use them, according to industry data.
But fewer than 20 percent of eligible workers take this option.
The settlement came to just less than $2,900 for each eligible worker.
Second, there is no evidence that employers have hired more eligible workers as a result of the program.
Any wage rate above $4.25 an hour may be paid to eligible workers during this 90-day period.
This would nearly double the number of workers eligible for retirement, to 34,000 from 18,000.
Under the package announced today, eligible workers could get up to a year's pay for leaving.
The tax credit will begin showing up in the form of lower withholding for eligible workers beginning April 1.
That contract makes workers eligible for retirement after 30 years regardless of their age.
About 60 percent of the 1,500 eligible workers are union members.