A T&T union employees are taking a strike authorization vote as they work to reach a contract agreement.
That includes about 500 workers at the A T&T call center in Springfield. The contract expires at midnight on Saturday.
A T&T spokesman Walt Sharp says the company is prepared for a strike but says A T&T has a good history of positive negotiations.
If there is a strike, Sharp says A T&T has taken steps to assure customer service calls will be answered.