For ‘qualified’ and ‘unqualified’ workers, US OSHA is very clear on what they expect for baseline electrical training in places of employment. [It’s not Rocket Science.]

1910.331 - Scope www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=STANDARDS&p_id=9908
1910.332 - Training www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=STANDARDS&p_id=9909
1910.333 - Selection and use of work practices www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=STANDARDS&p_id=9910
1910.334 - Use of equipment. www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=STANDARDS&p_id=9911
1910.335 - Safeguards for personnel protection. www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=STANDARDS&p_id=9912