It is very important to report all electrical shocks:

The situation leading to the shock will be corrected only if reported. The shock may be fatal for the next person under the same circumstances. Typical sources of electric shock in the research laboratory:

power supplies capacitors instrumentation and controls pulsed power transients conductors and connectors power tools
Case Study Causes of Past Electric Shock Events
Hardware
Dielectric failure Inadequate drawings and schematics Improper wiring of plugs and outlets Improper grounds Poor inspection, inadequate maintenance

P rocedure:
Rushed or distracted personnel Inadequate training Failure to verify equipment was off Failure to follow existing safety procedure Feeling comfortable with work abilities.