Giving your employees the freedom to work from any device and any location is always a good idea, not just during a crisis. But bear in mind the shared nature of mobile devices. When your employees work from personal devices, and access corporate data, the health of the device must be considered. Does it comply with corporate security and risk policies.
Your employees are probably using their mobile devices to access social media or other sensitive sites, and some employees will regularly hand their device to their children to distract them. But kids are tech-savvy, especially when it comes to downloading and installing applications onto these devices, some of which could be unauthorised or unsafe.
If your employees are set up to use their mobile devices for work, you need to make sure those devices are not running outdated and vulnerable operating systems or apps, and that unauthorised software is not installed, as they can put the security of the device and your corporate data at risk.