Since 1 January 2010, employees have the right to additional maternity leave. It may be used either by the mother or – in certain situations – by the father. In 2010 and 2011 the additional leave for mothers amounts to 2 weeks in the case of single births and 3 weeks in the case of multiple births. For fathers it is 1 week. The employee should apply for this leave at least 7 days in advance. An employee using this leave has the right to work during the leave, however, at no more than half-time.