Crossbench senator Derryn Hinch has joined a growing revolt in support of penalty rates for low-paid workers.
One Nation leader Pauline Hanson on Monday reversed her position, saying she had listened to the public's anger over the Fair Work Commission's decision and would no longer support a cut in penalty rates for the retail and hospitality industries.
Senator Hinch told 3AW radio on Tuesday while he respected the commission's role as an independent umpire he was also having a "rethink".
"I do respect the Fair Work decision, but I'm starting to think I might be going to the third umpire here - the workers themselves," he said.
"I'm being flooded with specific cases of people who are going to do it tough."