Irish Unemployment Decline Isn't A "Mirage"
Second, he uses numbers in a misleading way by counting emigration before unemployment peak. Since we're supposed to analyze the decline, that is misleading.
And thirdly, if the premise is it is a problem that emigration of workers still leaves the problem of a lower tax base of employed workers, he forgets to note that Ireland has a very high (by Western standards) natural population growth rate which more than compensates for emigration. Ireland's population is in fact growing, albeit slowly.
While Ireland's unemployment numbers are published on a monthly basis, its employment numbers are only available on a quarterly basis and second quarter numbers aren't available yet. But between Q1 2012 and Q1 2013 employment rose by 1.1%.