AS IF dairy farmers didn't work hard enough already.

Now they have to put in an extra three days' work in February - well at least according to Murray Goulburn's 2013 calendar.

The March page of the calendar sent out to MG suppliers shows the last five days of February, ending on Thursday, February 31.

One farmer wondered if Murray Goulburn managing director Gary Helou was planning to get his second $50 million in savings from MG by making suppliers work an extra three days a year.