Is your wife self employed or an employee? Does her employer deduct Income Tax from her salary at source?
Maternity Pay is paid by the employer and subsequently reclaimed from HMRC via deduction from payments to the Inland Revenue each month.
Assuming that your wife is an employee, although the lack of a signed contract is of no importance in this respect, to answer your questions:
1. Her employment has to be kept open, but not necessarily in the same role. Although she cannot be disadvantaged earnings wise by any change.
2. A change from full time to part time working would indicate a request for flexible working. The employer has every right to refuse this request if it means that they cannot employ someone for the remainder of the time when your wife wold not be working. There if an official way to make this request:
http://www.direct.gov...leworking/dg_10029491
Furthermore, should such a request be granted, she wouldn't have the right to request a return to full time working for a year, when the same procedure has to be followed.
Of course, if her employer is agreeable, she may be able to make such arrangements informally!
3. Statutory Maternity Pay is only payable for a total of 39 weeks, therefore the remaining 3 months will be unpaid, but the employee does have the right to take up to 52 weeks maternity leave. See no 1 above.
Your wife should have received a written acknowledgement from her employer when she officially informed them that she was pregnant and would be taking leave. This acknowledgement should indicate the various time scales that have to be met in respect of the decisions that she will be making about when to return to work.
4. Your wife will still be entitled to her holiday leave in addition to her maternity leave, but obviously a lot depends upon when her employers holiday year commences and ends, how much holiday leave she has taken and therefore how much will still be outstanding to her at the time of her return to work. Normal holiday leave rules apply, therefore her employer can refuse a request should it interfere with the working of the practise. Maternity is one of the few instances where an employees leave may legally be carried over to the following holiday year . As an employer, I would not be too happy, nor would my employees, if someone should return from maternity leave and then expect to immediately go on leave just before Christmas, especially if it means that others may miss taking leave during that period!