Mr Bennett said he had been into the club shop and told one staff member who worked there about their efforts to raise money and “she was in tears”.
“How can this happen in this day and age where someone has got people working for nothing?” he added.
“Staff are so upset because they feel part of the club, it’s not just their job.
“It’s appalling and shouldn’t have happened.”
Sheffield South East MP Clive Betts said staff needed money “to pay their mortgage and food bills” and described the situation as “dire”.
“The club is important to the life of our city so the idea that Wednesday could cease to exist because of a bad owner… I think is absolutely appalling.”
Mr Chansiri said in a previous statement, external he took “full responsibility for being unable to fulfil my current obligations”.
He said last month: “I also understand the frustrations of everyone at this difficult time.
“I can only apologise to our people once again and assure you all that I am doing everything I can, every minute of every day, to ensure the situation is resolved in the best possible way for now and the future.”