LU has also agreed to make additional payments to drivers working shifts “of a certain duration” or finishing after 01.30hrs.
In a statement LU said the “temporary changes” to working arrangements and payments “follows six months of constructive discussions with union representatives”.
London Underground Managing Director Mike Brown, said: “This agreement is a good deal for London Underground, our drivers and those thousands of customers who will be attending the London 2012 Olympics and Paralympics Games.
“LU is committed to ensuring that the train service we provide contributes to the successful operation of the Games and I am pleased that we and the unions have been able to engage in constructive dialogue to reach this agreement.”
