Lalabobo/Clubman,
Whilst there is a general statutory right not to have deductions made under section 5(1) of the Payment of Wages Act 1991, there are also exceptions to this general rule.
Section 5(5)(a)(I) of the 1991 Act provides that an employer may make a unilateral deduction (with or without prior consent) where the purpose of the deduction is to reimburse the employer in respect of any overpayment of wages. Any amount deducted cannot be greater than the total sum of overpayment.
In this case, it seems that lalabobo was overpaid on the previous weeks she was out sick and a deduction in respect of those overpayments have been made this week. If this is the case, this is legitimate.
Having said that, section 4 of the 1991 Act provides that every employee is entitled to receive an accurate, up to date statement of wages that clearly sets out any deductions. A failure to do so may lead to a fine of up to 1,000Euro.
I would recommend that lalabobo ask her employer for an up-to-date payslip setting out exactly which has been deducted and on what basis. If the employer is not amenable to that, there is the option of making a claim to the Rights Commissioner under the Payment of Wages Act 1991 on the basis of a failure to provide a correct statement, and possibly, on the grounds of an unlawful deduction - in addition it appears that lalabobo may bring a claim to a Rights Commissioner under the Organisation of Working Time Act 1997 as it appears that proper records have not been kept of lalabobo's work attendance.