The West Virginia Public Service Commission is likely to make a ruling on Century's request by mid-September.
In its Sunday news release, Constellium said it made an offer to the union "earlier this week that would provide hourly employees with a net gain of more than $23,000 over the [five-year] life of the contract," including a $7,000 bonus for each USW worker when the contract is approved.
"The union responded by refusing to present the offer to employees, canceling the parties' contract extension and announcing its intention to strike," Constellum stated.
Constellium said its latest proposal also withdrew a previous requirement that employees would have to participate in a company health-care plan requiring them to pay 10 percent of total health-care costs for the life of the new contract.
Its latest contract proposal, Constellilum said, "only would have required employees to make monthly contributions to their health-care benefits and share in future cost increases."
Gorrell worries about the impact a Constellium strike might have on the plans of Century to reopen its plant late this year or early next year.
If its own plant reopens, Century plans to immediately hire 470 employees to operate it, including workers laid off in February 2009. Century also plans to hire 140 additional employees to refurbish the aging plant and make it more efficient.
Gorrell said, "I think this is really going to hurt our situation, as well. For Constellium to be on a strike is not good for Century's thinking about reopening, because they are so connected.
"I don't know whether it will be a short strike or a long one, but this is not the same world it was 30 years ago. Today, when you go on strike, you may never go back to work.
"I hope it ends soon and I hope it ends well. I am very concerned."
Based in Paris, Constellium has 9,500 employees working in 26 countries and a market presence in more than 60 countries.
Kaiser Aluminum and Chemical Corp. opened the Jackson County aluminum smelting and rolling complex back in 1958, operated it until 1989, then sold it to Ravenswood Aluminum.
When Ravenswood Aluminum later sold the facility, it split into two plants. Alcan Rolled Products operated one and Century Aluminum operated the other. Constellium bought the Alcan plant in May 2011.
Reach Paul J. Nyden at pjny...@wvgazette.com or 304-348-5164.