Vibration from work with powered hand-held tools and equipment or processess can damage the hands and arms of users. This is know as 'Hand-arm vibration syndrome'.  It is a painful, irreversable condition which includes 'vibration white finger'.  Back pain can also be caused by or aggrevated by vibration from a vehicle or machine.  If yo have employees working with hand-held or hand-guided tools and machines then Virbration issues concern you. The Control of Vibration at Work Regulations 2005. Guidance on Regulations will help you further.