In January, 2007, the government of Ontario announced changes to the Occupational Health and Safety Act (R.R.O. 1990, Regulations 851 and 855), introducing stricter limits for noise exposure in the workplace. The Act affects all industrial and oil & gas workplaces in the Province and serves to reduce the risk of noise induced hearing loss (NIHL) for workers. At the same time, the tougher regulations places additional obligations on industrial employers and on the Engineers responsible for the work environment.