| The Occupational Health and Safety Act of | | | | such as Acrylonitrile, Arsenic, Asbestos, |
| Ontario, for instance, states that asbestos | | | | Asbestos - Construction, Building and Repair, |
| is classified as a designated substance in | | | | Benzene, Coke Oven Emissions, Ethylene Oxide, |
| some workplaces. Hence employers are obliged | | | | Isocyanates, Lead, Mercury, Silica and Vinyl |
| to provide safety measures when they use a | | | | Chloride among others. |
| designated substance like asbestos. | | | | |
| | | | The Occupational Health and Safety Act |
| The employer can only keep the amount of | | | | mentioned states that the employer has to |
| asbestos dust low, in order to reduce the | | | | review the work methods and assess the |
| possibilities of its workers of getting ill | | | | likelihood of worker exposure, when a |
| due to asbestos fibers inhalation or | | | | designated substance such as asbestos is |
| swallowing. | | | | present in the workplace. |
| | | | |
| Designated Substances are hazardous | | | | The control program, when there are risk of |
| substances that can be a biological, chemical | | | | worker exposure to hazardous minerals like |
| or physical agent or combination thereof | | | | asbestos that can produce asbestosis or |
| prescribed as a designated substance to which | | | | another asbestos-related diseases, must |
| the exposure of a worker is prohibited, | | | | include engineering controls, work practices, |
| regulated, restricted, limited or controlled. | | | | hygiene practices, record keeping and medical |
| Some regulations specify different | | | | surveillance. |
| procedures to control designated substances | | | | |