I work in a small office, my boss has already employed the woman who will be covering my maternity leave from July. At the moment she is working on 'special projects', arranging events, which I don't do, but when I leave she will be doing my job.
She's being paid £6k more than me, pro rata. Is this legal as she will only be doing my job when I'm off, what she's doing now is separate in my mind?