well, structural employment arises as a result of developments and changes in the demand for labour (usually a result of new technology, innovation, shifting preferences/likes, microeconomic reform etc) so the demand for labour shifts from inefficient industries to efficient and potent industries. there will always be a segment of the labour force deemed redundant. a 'natural rate' [insert graph
] of unemployment will inevitably exist, comprising frictional, hard-core and structural. so its one of the variables dictating the level of employment available. there's ur supply-side constraint to ec growth. a limit is forced upon the readily available supply of labour.
structural unemp cant be solved via macroeconomic policy, esp in aus. its critical that micro reform is coupled with objectives of re-education and training. u could shove in some background info the shift in approach re: structural unemp in aus (keating vs howard gov). keating's 'working nation' policy attempted to address the issue of structural unemp. howard gov has emphasised microec & labour market reform. but i dont know if thats criterion for marking ur essay.
my curriculum coordinator said eco will be scaled at nearly the same level as physics and chem. whatever that may be...sounds good.