Employer not been paying my tax...!?

Hi Guys,

I'm looking to get some informartion for my sister, I'll list the points below.

- She started working on the 24th July 2010 on a temporary week to week contract

- Found out she want pregnant on the 28th August and advised her employer

- finished up work on 14th January as temp contract was terminated

- applied for Maternity allowance as she knew she was not entitled to SMP

- Filled out all the forms and sent away payslips and P45

- Job Centre advised employer should be paying SMP as she worked past the 2nd of January.

She has now been told that her employer has not been paying any tax for her despite them taking it from her and an investigation has now been started. In the meantime she has had to benefits or wages since January and she is struggling to pay her bills, her partner does live with her but is on a temp contract too and at the moment only getting 2 or 3 shifts per week.

She has tried to apply for crisis loans which have been unsuccessful and does not qualify for the surestart maternity grant as she is due 3 days after the cut off. Any help would be appreciated.