Workers off trams scheme.
Around 50 staff at TIE have volunteered to go out of a total workforce of between 65 and 70.
Last month, it was reported that TIE planned to make half the workforce redundant in a bid to cut costs.
TIE lost a number of high-profile staff in recent weeks, including chief executive Richard Jeffrey and director of communications Mandy Haeburn-Little.
Last week, city councillors agreed that the crisis-hit project should be completed at a cost of pounds 770million after it was found that the cost of scrapping it would be pounds 750million.