In ESD (EPA) areas, environments sensitive to electrostatic phenomena, it is compulsory to use approved dissipative occupational footwear complying with the European EN61340-5-1 standard, which provides for as follows:

When the footwear/metallic plate system is used the resistance value shall range between:

5 x 104 0hm (1 x 105 for shoe) e 1 x 108 0hm

When the footwear/floor system is used as the main method for the unloading on earth, the total resistance of the combination shall be between:

7.5 x 105 0hm e 3.5 x 107 0hm

Dissipative, footwear besides a conformity mark, shall also indelibly bear the logo stamped in black on a yellow background. Which identifies their specific characteristics.
Through its sole construction, ESD footwear provides a safe, controlled method of discharging static electricity that accumulates in your body. The tolerances for the resistance of ESD footwear are stricter (100k0 35M0) than for ordinary antistatic footwear. Wearing ESD footwear can help you avoid damage to sensitive electronic equipment.