It's not going to come from people working more. Excerpt from the IMF's latest Debt Sustainability Analysis for Greece, just released:
Oh dear. Quite apart from the negative contribution to growth, the prospect of unemployment taking 44 years to return to something approaching normality is simply appalling for Greece's population. I've looked in more detail at this here (Forbes).
Well, if labour isn't going to drive growth, there's always investment, yes?
Er, not really. The outlook for capital investment doesn't look too good either:
So if people aren't going to work more, banks aren't going to lend, and there isn't going to be much in the way of investment, where is the growth going to come from?
Aha. Structural reforms, of course!
So the IMF doesn't believe Greece can deliver the pace of structural reforms that would be needed to deliver TFP growth much above 1 percent. No-one should be surprised by this. The remarkable thing is that anyone ever thought it could.
And that means that the outlook is poor - for the foreseeable future. A long-run growth rate of 1.25 percent - or more likely less - in an economy that has shrunk by 27 percent in the last seven years, means that Greece effectively faces decades of depression.
Whatever fiscal sins successive Greek governments may have committed, I find it hard to believe that the Greek people deserve such hardship.
Debt Sustainability Analysis, Greece, May 2016 - IMF
IMF predicts unemployment in Greece will fall to 12 percent...by 2040 - Forbes
The Economic Consequences of the Eurozone - Forbes
Morality in the Greek crisis