In other messages, Mr Matthews is alleged to have said Ms Morris was ineffective in her work and that “I’ve got no loyalty to the lazy cow”.
In another exchange, Mr Hardiman is alleged to have said: “I’ve calmed down now, but I could still kill her, buddy.”
Ms Moore, a Worcester-based lawyer, said: “They are so offensive, considering they were sent by the chief fire officer – the first and second officers in charge,”
“This is over a period of 12, 18 months at least, where they’re communicating casually about their views about women, about Jan, referring to her as a ‘lazy cow’.”
In other exchanges, the pair discussed a request Ms Morris made on LinkedIn about finding a firm that made female firefighters’ uniforms.
“She is having a whinge on LinkedIn again, that’s the reason this gender shit pisses me off, constantly rammed down our throats,” Mr Matthews is alleged to have said.
The allegations come after Ms Morris was a witness in the case of firefighter Sasha Acheson, who won a sex discrimination case against Avon Fire and Rescue Service.
Ms Acheson had accused her employers of sex discrimination, harassment and unfair dismissal.