A former employee of HBOS is claiming sexual harassment and discrimination, as well as constructive dismissal.
In an ongoing employment tribunal, Haley Tansey alleged she was traumatised by a business trip she took while working for the firm in 1998, the Halifax Evening Courier reports.
She said she turned down the advances of a male colleague while on the trip only to wake up to find him in her room.
According to Ms Tansey, he then undressed and she was frightened. She states that he gained entry to the room by telling the night porter that they were a couple.
She had a 17-year career at the bank, which became a wholly-owned subsidiary of the Lloyds Banking Group earlier this year.
During this time, the 39-year-old achieved a number of promotions before she left her role.
Ms Tansey claims that she made complaints about a catalogue of unsuitable comments made by co-workers but did not go on record with her grievances until 2007 because she was concerned about the implications.