Izzy, who is 18 and works at McDonald's, says she is still witnessing "disgusting behaviour", months after the BBC revealed sexual abuse claims at the fast food chain.
She is one of more than 160 people who have approached the BBC with allegations after our investigation.
They include claims of sexual assault, harassment, racism and bullying.
McDonald's said it was "determined" to root out behaviour that falls below the high standards it expects of staff.
It comes as a group of ex-McDonald's workers told the BBC they planned to take legal action against the firm, accusing it of failing to protect them.
MPs will now question the UK boss of McDonald's over the claims of sexual abuse uncovered by the BBC.
Alistair Macrow will be quizzed by the Business and Trade Committee on 14 November.