The 17-year-old media and business student was brought into the board room along with David Odhiambo by Platinum team leader Steven Cole.
Both teams were tasked to spend the least amount of money possible collecting some rare items for an opera company.
Platinum and Odyssey both spent over £700 on items, but with fines and the price of the items they didn't buy both amounted to over £2,000.
Odyssey narrowly won the task, with Lord Sugar telling team leader Andrew Tindall: "I would like to say well done, but it's a bit of a shame you had £797 of expenditure and £1,236 worth of fines."
After being brought back into the board room, Amy criticised David's qualities as sub-team leader, saying: "You were incredibly lazy... you were useless."
David responded: "You were constantly rude to people on the phone, you were constantly rude to me."
Making his decision, Lord Sugar said: "Steven - on this task, you have completely messed it up, in my view. You were completely out of control.
"David - I like your fighting spirit, I really do. There is an element of no smoke without fire. We're only in week three and you have a 100% record of being here."
Finally, he said: "Amy - I don't like this rather powerful and blunt method of dealing with people, that is certainly not a way forward.
"From what I've heard today and from a bit of observation I've had in the past from Nick and Karren, it is with regret that I'm going to actually say - Amy, you're fired."
Speaking after the show, Corrigan said: "This isn't the end of my business dreams. Today was a massive knock but if anything it's going to have to make me stronger."
Young Apprentice continues next Thursday (November 22) at 8pm on BBC One.