Ms Kelly, people and capability lead at the firm, had told the tribunal she considered female-only toilets a place of refuge.
She said she first became aware of a transgender person using the facilities in 2019 when a staff member from another UK office came to Edinburgh.
Ms Kelly said she did not raise the issue at the time as she feared being labelled “transphobic” or being put on the “naughty list”.
She eventually raised a complaint in March 2023 after walking out of a toilet when a transgender colleague had walked in, leaving her “taken aback”.
The tribunal also heard the women’s toilets were “rebadged” as a WC in January 2025, but no change was made to the men’s facilities because they contained urinals.
Leonardo argued that Ms Kelly had a choice of either using the toilets nearest to her desk, walking through an atrium to toilets with more privacy, or using an accessible toilet.
The firm’s vice-president of people shared services, Andrew Letton, told the tribunal it was not a violation of her dignity because of the choice of facilities available.
He said the company had been “nothing but sympathetic” towards Ms Kelly’s grievance and described her as a “valuable employee”.
