Sheila McGregor resigns from Seven West Media board

One of just two women sitting on the board of Seven West Media has resigned after only 19 months in the role.

Sheila McGregor resigned as a non-executive director on Thursday afternoon, the company announced in a three-sentence statement to the market.

Seven CEO Tim Worner and Seven's chairman Kerry Stokes at the company's offices in Pyrmont. Credit: Dom Lorrimer

"The company thanks Ms McGregor for her service to the board and wishes her well for the future," the statement said.

Seven did not provide any details about why she chose to leave. Ms McGregor has been contacted for comment.

Sheila McGregor has resigned from the Seven West board.

Her resignation comes as the board waits for an independent report on the company's chief executive Tim Worner.

The company commissioned the report from Allens after a former employee, Amber Harrison, revealed she and Mr Worner had an affair over several months.

Ms Harrison claims she became the target of a corporate witch hunt after she told senior managers about the affair and was accused of putting more than $100,000 of personal expenses on company credit cards.

Her allegations about drug-taking on company time, former partners being compensated with promotions, unauthorised credit card expenditure and claims about the heavy-handed manner in which Seven tried to crush Harrison in order to protect Worner raised concerns about Seven's corporate governance.

Seven has defended its conduct and accused Ms Harrison of misusing her credit card.

Ms McGregor is a partner at Gilbert + Tobin in Sydney and was appointed to the Seven West board on June 24, 2015. She is also a director of The Australian Indigenous Chamber of Commerce and the Gilbert + Tobin board.

She was one of two women on the 10-person board of the media company and was a member of SWM's audit and risk committee.