From the ABS on today’s Labour Force figures (h/t The Lorax):
The incoming rotation group for February 2014 had a higher proportion of employed persons and persons in the labour force (i.e. less persons not in the labour force) than the sample it replaced. This incoming rotation group contributed, in original terms, 37% of the increase in total employment and 29% of the decrease in persons not in the labour force in February 2014. The trend estimates provide a better measure of the underlying level and direction of the series especially when there are significant rotation group effects.