"Unloading the dishwasher, standing up to take notes on the whiteboard in a client meeting – all of the things that support the operation of an organisation, that aren't necessarily assigned to one person," she said.
What's more concerning is that this is a learned behaviour from childhood.
"According to new research on children, girls are expected to perform around 40 to 60 per cent more household chores than their male siblings," says Liesh.
"We have certain cultural expectations associated with gender which make it more likely that girls and women engage in these activities from the beginning – fast forward to the workplace and women are the ones who tidy up because it's an ingrained expectation that they will."
Unfortunately, Liesh doesn't have a solution - and acknowledges that often, women would rather just clean up themselves than suffer through an unclean workspace.
She does, however, recommend that the first step is acknowledging the gender issue.
"There isn't a silver bullet answer. I'm not going to tell women everywhere to go on strike. Women need to start with recognising they're doing it, and acknowledging it."
Funnily enough, however, the research also found that it's only in mixed-sex workplaces that women are left to do all the cleaning. In single-sex male workplaces the men will pick up the slack if there's no one else to do it.
"Their space doesn't get disgusting or filthy, the stuff gets done. It's only in mixed-sex groups where women shoulder the burden," says Liesh.