A former Paul Weiss Rifkind Wharton & Garrison lawyer has failed to overturn a decision by an employment tribunal that stopped her from calling a witness to back up her claims of discrimination at the U.S. firm’s London office.

The employment appeals tribunal upheld the decision made last week that former Paul Weiss lawyer Anna Christie, who is pursuing claim of about $1.7 million against the firm, would not be allowed to submit a witness order to another female Paul Weiss lawyer.