On 1 August 2008 a new Legislative Instrument (Gazette Notice) was issued, increasing the Minimum Salary Level (MSL) by 3.8 per cent. This instrument applies not only to new sponsored worker visa applicants, but to all sponsored workers. This means that the formula for calculating the MSL will apply to every sponsored worker who is paid in accordance with an MSL.
For more details: http://www.immi.gov.au/skilled/whats_new_457.htm