1. What is the difference between a procedure and a work instruction?
Short answer: a procedure says what is done and by whom in a process; an instruction says how to perform one task. An accident investigation procedure covers reporting, securing the scene, appointing a team, finding causes and corrective actions across several roles. A lathe safety instruction describes what the operator does before starting, during work, after finishing and in an emergency.
Procedures are typical of management systems such as ISO 45001, ISO 9001 and ISO 14001; current editions speak of documented information rather than mandatory documented procedures, so the organisation decides what to describe as a procedure. Safety instructions, by contrast, are required directly by Polish labour law (art. 237⁴ § 2 of the Labour Code).
The two complement each other: a lockout procedure sets plant-wide rules, while the instruction at a given machine shows where its isolation points are and in which order to lock them.





