UBS to announce additional 1,900 layoffs

? Stamford?s largest employer, UBS, is expected to announced 1,900 additional job cuts Thursday as the U.S. credit crunch worsens.
The job cuts will add to the 7,000 cuts already announced by the company. UBS has posted more than $44 billion in losses since the start of the credit crisis last year.
It is not clear how many local jobs will be affected.