Byanyima admitted that the organization was not without its problems, and promised an independent commission would be appointed to investigate the claims against Oxfam director Roland van Hauwermeiren.
A woman employed by Oxfam has described how she was physically abused and assaulted on two occasions whilst working for the charity.
Oxfam's regional director for Asia Lan Mercado earlier this week told the BBC she was aware of cases of sexual abuse involving staff in Bangladesh, Nepal and the Philippines between 2009 and 2013.
Byanyima went on explaining the reforms that will take place at Oxfam includes, The organisation has set up high-level commission that will view the past claims of sexual exploitation and will also have eye on the present practices in the organisation, the number of employees will be doubled in order to safeguard the charity statutes more than of tripling the budget.
The new plan comes a week after revelations that Oxfam staff used prostitutes while working on the aid operation following Haiti's devastating 2010 quake.
Oxfam said it was committed to publishing a 2011 internal investigation "into staff involved in sexual and other misconduct in Haiti as soon as possible, after taking steps necessary to protect the identity of innocent witnesses", adding that the "names of the men involved have already been shared with the authorities in Haiti".
International Development Secretary Penny Mordaunt said the funding would stop until the department was "satisfied they can meet the high standards we expect", the paper adds.
Oxfam ambassador and British actress Minnie Driver (among others) resigned, following sexual-misconduct allegations. "I think it would be wrong to hold the entire organisation to account for the actions of a few people", says Pegg.
Andrés Guardado salió lesionado del juego ante Deportivo La Coruña
Ahora el turno correspondió al mediocampista del Real Betis , Andrés Guardado , quien salió con un problema muscular al minuto 83. El único gol del partido lo anotó Loren Moron para el Betis a los 54 minutos de juego.
The announcement follows days of controversy surrounding the charity group involving accusations against staff who were stationed in Haiti following its disastrous 2010 quake. "I have never visited a brothel, nightclub or bar in the city or this country".
"This was with an honourable, mature woman, who was not an natural disaster victim nor a prostitute".
Oxfam got $NZ60 million from the British government in 2016-17.
"He would bring back children's clothing for the toddler and he brought things for me", she said.
"The intensity and the ferocity of the attack makes you wonder, what did we do?" he said in an interview with the Guardian.
Employed as a junior aid worker following the quake in Haiti, the woman claimed that the first incident happened during her first time working for the charity, when a senior colleague attacked her.
Oxfam CEO Mark Goldring said the organization is working to protect staff, volunteers and communities around the world.