People who volunteer or request to do work experience at a company should be able to do so quickly and easily rather than being subject to normal employment laws.
Why does this idea matter?
I work in Higher Education and recently I met a woman who was really keen to gain work experience in my field; she was offering to work for us for free one day a week in exchange for learning some new skills and keeping herself busy in between her freelance work. You'd think this would be dead easy, right? I have three spare desks and computers within spitting distance, she should just have been able to come in and switch on. Guess what? The rules and regulations we would have had to conform to in order to facilitate such an arrangement were so extensive the company decided it wasn't worth our while. So we missed out on having a competent, bright and motivated addition to the team, and she missed out on the work experience she needed to get paid work in the field.
I agree that it is important to have structures in place in order to protect people and businesses from exploitation, etc – but work experience (and volunteering) is so valuable, there shouldn't be so many barriers!