Emotional labour was originally defined in terms of the workplace - jobs where you have to be nicer or harsher or pushier than you would naturally be, at the cost of your psychological well-being. But of course it can equally apply to occasions like Christmas.
It's seen as the woman's job to smooth over ruffled feelings, manage children's expectations, deal with tactless relatives, bottle up family feuds, and generally keep people happy for the duration. The stress involved is colossal, but men are usually excused from such emotional labour on the grounds that they're "not very good with emotions", "haven't been socialised to do it" or "would make a mess of it". How very convenient for them.
Luckily for Jenny and I, we don't have big family Christmases anymore and are normally on our own. So the only emotions we have to manage are each other's. And the only quarrel will centre on how many points you get for axalotl in our Scrabble tournament. Or whether we should watch Some Like It Hot or Casablanca.
But emotional labour was very necessary when I was working. I had to be constantly nice to bookshop customers, councillors, charity supporters, social workers and whoever else my job required me to mingle with. Suppressing anger, abuse or antagonism, however justified, was the order of the day.
As a customer, I've had to be studiously polite to bank officials, civil servants, tradespeople and call centre staff to ensure they treat me properly and don't try any funny business. Telling them exactly what you think of them would be fatal.
But sometimes I forget myself. I once told Santa he was a drunken old fool who needed to lose some weight. I haven't had a present from him since.
