They wear business shirts by day and sport boxing gloves by night.
Sixteen local businessmen and women are training hard in preparation for this year's Corporate Clash in Macarthur.
The annual charity event will be held at Campbelltown Catholic Club on August 3.
The Corporate Clash in Macarthur was created by Mark Scarce from Camden Hire and Grant Butterfield from Marsdens Law Group.
Mr Butterfield told the Advertiser that the pair had become weary of charity golf days "five or six years ago" and wanted to "do something different".
"We initially wanted to raise funds for brain cancer [research] and that's how we came up with the idea," he said.
Competing in 2019 are Liam O'Neil (from O'Neil Civil), Alec Reid (Steel Supply), Meryl Lamacchia (My Property Consultants), Allina Burke (McGrath Real Estate), Jake Alchin (Macarthur United), Mark Buttigeig (Narellan Sand and Soil), Erin Fabian (Oakworth Homes Pty), Linda Carmagnola (Camden Mowing), James Vella (Leppington Speedy Seedlings), Danny Gough (G&S Diesel Services), Aiden Hopewell (HDSA Group), Mitch McGrath (Wilelah Homes), Sonny Searle (Design and Construct Electrical), Greg Pinkerton (GRS Towing), Andrew Willis (Hammer N Nails Carpentry) and Chris Lecky (Superior Mini Mix).
Mr Butterfield said this year's batch of boxers trained twice a week at Grange High Boxing, Smeaton Grange under the guidance of coach Anthony Redward.
He said fighters had to train properly and the fight would be held under Combat Sports NSW rules.
Mr Butterfield thanked the local budding boxers for their support.
"The fighters are taking a step out of their comfort zone," he said.
The Corporate Clash in Macarthur has raised more than $500,000 for charity since the initiative launched.
The fighters are taking a step out of their comfort zone.Event co-organiser Grant Butterfield
Mr Butterfield said organisers had set an ambitious fundraising target of $150,000 for this year's event.
The 2019 Corporate Clash will raise money for the Charlie Teo Foundation, Rare Cancers Australia, Higher Thinking brain cancer research, Associate Professor Winston Liauw, David Morris Cancer Research Fund and the Rotary Club of Camden.
Details: Corporate Clash in Macarthur Facebook page.