Councillors in Worcestershire have pledged not to have a drink while carrying out council work.
The county council agreed to a motion not to drink at work put forward by Lib Dem councillor Liz Tucker.
Ms Tucker said there had been no incidents of "untoward behaviour" but there was a history of a "gentleman's club" approach at the council.
The council recently appointed a new leader and Ms Tucker said the time was right for the agreement.
Conservative councillor Adrian Hardman is the new leader after Dr George Lord quit over allegations that he had acted inappropriately towards staff.
Ms Tucker, councillor for the Pershore ward, said her motion had not been sparked by any particular incident.
"It's not that there has been recent untoward examples but in the past it has been an issue and I wanted to see a line drawn under it and proper modern practices in place," she said.
"The county council is a modern workplace and this was a lingering trace of the old gentlemen's club approach to the way some councillors regarded county hall."
Ms Tucker said she hoped she would not get a reputation as 'Temperance Tucker' as she had the bar at county hall closed in the 1990s when she was council leader.
The motion was agreed by all councillors.