Just briefly, in the code that applies to members as employers there is a definition of workplace that includes all offices or other premises where the business of the House is being conducted. But it also extends to locations and situations including business travel, conferences, and work-related social gatherings where House of Commons-related activities are performed, and where inappropriate behaviour or comments might reasonably be perceived to have a subsequent impact on work relationships, environment, or performance.
On February 23rd, 2015. See this statement in context.