From the Journal of Commerce:

The ports of Los Angeles and Long Beach were open for business Friday despite the rejection of a tentative contract agreement by office clerical workers.

However, what the next step will be involving the Office Clerical Unit of International Longshore and Warehouse Union Local 63 and waterfront employers is uncertain at this time.

Cargo interests are concerned that a prolonged impasse could lead to a repeat of contract negotiations last fall that resulted in an eight-day strike at 10 of the 14 container terminals in the port complex.

More at the JOC