You probably aren't wrong. Those temporary workers are not Union members, so they wouldn't get the same pay or benefits that specifically apply to Civil Service employees, or the benefits that are negotiated in the contract.
“You probably aren’t wrong. Those temporary workers are not Union members, so they wouldn’t get the same pay or benefits that specifically apply to Civil Service employees, or the benefits that are negotiated in the contract.”
Civil Service employees? The USPS hasn’t been Civil Service for decades.