I am with a Supply Company, but my pay is administered through ISS. I have been checking my payslips and a worrying trend is showing. I pay NI and pension, but then I am charged for the employer's NI and pension contributions as well. Surely this cannot be right. Is it even legal, and if so what loophole are they using to get away with it? I am thinking of ditching the umbrella company and get paid directly from the Supply Company. I am just wondering what others have done and if this double deduction will continue if paid directly from the Supply Company. I am on long term supply at one school covering for maternity leave.