Why Grangemouth closure matters politically
23 October 2013 Last updated at 12:21 BST
Ministers are meeting in London to decide on a response to the decision to close the petrochemical plant in Grangemouth.
Ineos made the announcement following a meeting with the workforce at the plant and its associated oil refinery.
Scottish First Minister Alex Salmond said the closure was the "outcome that matches our worst fears".
Chief political correspondent Norman Smith assesses the political ramifications of the decision.