BYOD could open businesses to copyright litigation: BSA:
Most businesses know that using pirated software can land them in hot water, but many don’t realise that their employees could also open the door to expensive litigation via BYOD schemes, according to Business Software Alliance chair Clayton Noble. […]
Some offer, for example, student licences that are for use by students only in connection with their education, and if a student brings a device into the workplace and starts using it commercially, it may be that the person is breaching their licence and breaching copyright. [In that case] the business will be infringing copyright by authorising that by not having proper checks on whether the software used for the benefit of its business is being properly licensed
This is for Australia, but I bet there are similar lines of thought everywere.