Past winners include Rosewood Tuckers Point for recycling its cooking oil as biodiesel fuel and Airport Operations who simply changed their air conditioning thermostat by a couple of degrees and saved thousands of dollars.
The Green Workplace Awards also recognize individuals via the Green Champion Award.
Judith Landsberg, Greenrock President, commented: "The corporate environment is naturally competitive, it's in their DNA, so Greenrock, in partnership with the Bottom Line Magazine, decided to harness this competitiveness to save money and to help the planet."
Although companies need to register by next Tuesday they do not have to submit their plans until December 7.
For more information or to register online visit www.greenrock.org/projects/business/green-workplace-awards