One area, the state Office for Refugee Affairs, is already on red, Giffey said. The warning color stands for significant or critical impairments, she said. However, she said, that is not yet the case throughout Berlin. "We look at the numbers every day. We are now at about a 15 percent non-availability of staff." That is still manageable, Giffey said. A shortfall of between 20 and 30 percent can be handled, she said. "That means we are preparing for those numbers," the governing mayor said. If there is indeed a failure rate of more than 20 or 30 percent, there will be restrictions on services and offerings, she said. "Then the train, the bus, will just no longer run every three or two minutes, but at greater intervals. But it's important that we ensure the general provision of public services."