An example of regulatory and legislative frameworks inform quality standards that apply to the work setting. An example is the Mines Act of British Columbia, Canada. This mines act was enacted by the BC Legislature with input from industry and unions.An example of a regulation that comes from this is the stipulation that workers may not enter a trench that is greater than 1.2m or 4 feet deep due to the danger of being buried if it collapses. Another regulation is that if a worker is working alone he/she must call in to his/her supervisor every 2 hours to ensure that they are safe, are out of range of blasts, etc.