Mr Duncan-Jordan said the lack of specific detail on the reasons behind the layoffs raised questions.
He said: “What happens if they don’t fix things by 27 January?
“Do these people then get extended leave? Do they then get laid off permanently?
“None of that’s been answered.”
He said the treatment of workers by Sunseeker was not “any way to treat staff in a modern workplace”, and criticised the company’s lack of communication with him.
“As a major employer in Poole, and as the MP in Poole, there should have been some liaison between the two of us,” he said.
“I just think the way in which they’ve communicated with their employees is wrong, the timescale is wrong and I think the public and the MP for Poole has a right to know a bit more about how they’re operating and why it’s come to this.”