Wow.

"If you suspect your spouse of being romantically involved with someone at work, we strongly recommend you attend the office party," Ms Pihema said.

"Do not be put off by your partner suggesting the Christmas party is a `closed shop' or that you will not know anyone there. Arrange for a babysitter if you have children, wear your fancy attire and turn up."

She said if people had genuine concerns about their partner and workplace infidelity then Christmas parties were a source of information that may be "too valuable to your relationship to miss".