Not going to happen in a hurry, Harney for example will devote enormous amounts of time, effort and cost squeezing moderate savings from indirect employees, E.g. GPs/pharmacists/consultants (not that they’re not worthwhile; and no I'm none of the above) instead of tackling her own backyard where billions are at stake. Why…? Maybe, because she's public sector herself? Maybe, not up to tackling unions? Maybe, because across the public sector 300,000 = a lot of votes? Who knows?
Maybe because she (along with every other politician in the country) knows that the public sector is bigger and stronger than the government. The government cannot take then on because they will lose. It’s as simple as that.