You could always look at the mix of funds within your super portfolio. If you have choice of fund instead of having them spread over a diverse range of funds and being charged a fee/commission on each fund, while you are on leave you could move it all to a cash fund. Advantage - less likely to lose money especially during volatile times & only one fee, Disadvantage - less likely to make money if the market booms. When you then go back to work, you could re assess your mix of funds and invest in a more growth or aggressive risk profile to replenish your super fund.

Moving to cash however is not everyone's cup of tea. It's just an option.