Greenfields = type of workplace agreement under the Workplace Relations Act 1996, as amended 2005.
A greenfield is put into place before any workers are hired.
Part 8 Division 2 of the WR Act allows for two types of greenfields agreements, Union Greenfield Agreements (s.329) and a new animal, Employer Greenfield Agreements (s.330).
There are plenty of examples of union greenfield agreements; this is a good explanation of how they work...
"Where a new business or project is established, there is often a benefit for employers to enter directly into a greenfield agreement under the Federal Workplace Relations Act 1996 with one or more unions. A key advantage is that a greenfield agreement does not require the approval of any employees whose employment would be subject to the agreement. Another key benefit is that a greenfield agreement provides an employer with the opportunity to shut out less desirable unions as parties to and therefore effectively having a presence at the new business before the employment of any employees."
It would be interesting to know if Tiger is introducing a Union greenfield or an Employer greenfield.
One wonders if an Employer greenfield is simply a contract drawn up by the employer, like most AWA, and then offered to new employees on a take-it-or-leave-it basis.