Nearly 11,000 at the weekend, almost 151,000 on Monday and about 50,000 until Tuesday afternoon - that's how many electronic sick leaves were issued since the 1st of December, when the new system began operating, according to Wojciech Andrusiewicz, the spokesperson for the Social Insurance Institution (ZUS). Since the beginning of December, doctors are only allowed to grant sick leaves in electronic form, whereas the traditional paper method will be used only in extraordinary situations, such as the system failure.