Continental Seeks \$500 Mln in Labor Cuts  WASHINGTON (Reuters) - Continental Airlines &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=CAL.N target=/stocks/quickinfo/fullquote"&gt;CAL.N&lt;/A&gt; said  late on Thursday it would seek \$500 million in annual wage and  other concessions from its workers to avert more losses largely  caused by record high fuel prices.