(must comply to basic safety requirements but toe cap impact resistance requirement is lower - 100 Joules) & EN ISO 20347:2004 for Occupational Footwear (must comply to basic safety requirements with antistatic or slip-resistant properties. This standard does not require a protective toe cap) North America Canada In Canada, the most common standards used by employers are those of the CSA Group (formerly the Canadian Standards Association; CSA), published in CSA standard Z195. These standards are similar to the ASTM International standards commonly used in the United States but the testing methods do vary. CSA standards on shoe labels feature distinct shapes and colors, represents specific safety criteria for all safety footwear and apparel: Green triangle with CSA symbol - Sole puncture protection with a Grade 1 protective toe. (Heavy work environment: construction; machine shops; where sharp objects are present) Yellow triangle with registered symbol - Sole puncture protection with a Grade 2 protective toe. (Light industrial work environments) White rectangle with orange Greek letter omega and CSA symbol - Soles that provide electric shock resistance, with Ω (capital omega) being the symbol for ohms of electrical resistance. (Any industrial environment where live electrical conductors can occur) Yellow rectangle with green letters "SD", a grounding symbol and CSA symbol - Capable of dissipating an electrostatic charge in a controlled manner. (Any industrial environment where a static discharge can be a hazard for workers or equipment) Red rectangle with a black letter C, grounding symbol and CSA symbol - Soles that are electrically conductive. (Any industrial environment where low-power electrical charges can be a hazard for workers or equipment) White label with green fir tree symbol and CSA symbol - Provides protection when using chainsaws. (Forestry workers and others required to use a chainsaw) Blue Square with CSA symbol - Grade 1 protective toe only. (For all other environments not listed above) Generally, a safety shoe is a shoe that follows at least one of five criteria. The criteria that a safety shoe adheres to can be found by looking for the CSA (Canadian Standards Association) alphanumeric code found inside the shoe. This code is made up of a combination of 5 different symbols: 1, 2 or 0; P or 0; M or 0; E, S or C; X or 0. The first code indicates whether the shoe has a steel-toe cap (a metal shell embedded on top of the toes