How to Write Work Instructions that Your Frontline Will Follow

A procedure or SOP (Standard Operating Procedure) explains what needs to happen and why - the overall rules, responsibilities, and sequence for a task. It’s the high-level framework. For example, a lockout/tagout SOP tells the whole site how energy isolation must be done, who can apply locks, how verification works, and what documentation is required. Procedures/SOPs usually apply across departments, across shifts, and often across multiple sites.

A work instruction sits underneath that procedure/SOP umbrella and explains how to do the job on the actual machine in front of you. It provides the step-by-step instructions - e.g. torque values, bolt locations, photos, measurements, and the exact order the operator should move through.

Where the SOP sets the standard, the work instruction gives the hands-on walkthrough that makes that standard real. In most plants, the two work together: the SOP defines the rules, and the work instruction makes them practical and repeatable in the field.

Why Work Instructions matter

Even experienced operators usually complete the same job in slightly different ways. One person may choose to check the guard first, while another leaves it until the end. These small differences may seem harmless, but over time they can lead to missed steps, uneven equipment wear, safety risks, and repeated failures.

Work instructions create a shared baseline for how the task should be completed. They put the correct sequence, safety checks, tools, measurements, and acceptance limits in front of the worker at the moment they are needed. This helps experienced crews stay consistent while giving new operators something practical to follow without relying entirely on memory or verbal explanations.

They also prevent valuable knowledge from disappearing when an experienced employee changes roles or leaves the company. Instead of keeping the correct method in one person’s head, the operation has a documented and repeatable way of working. 

Why most Work Instructions don’t get followed

When a work instruction doesn’t match the job, operators will spot it immediately. For example, photos may show a different model of screen or steps are listed in a nonsensical sequence. Once trust in the instruction process is broken, crews default to memory or shortcuts - because they believe the document will slow them down, rather than speed up their work.

Common reasons instructions fall apart in the field include:

• They’re written separately from the equipment. Steps don’t match the actual walk-around path or the way guards open.
• They assume ideal conditions. Real shifts can have mud, dust, wear, time pressure, and other constraints that can cause a spanner in the works, which the document ignores.
• They’re too long or too vague. Operators don’t have time for lengthy paragraphs. They need short, concise and numbered steps.
• They’re outdated. Equipment gets swapped, retrofitted, or relocated, but the instruction stays the same.

How to write Work Instructions

Writing work instructions starts with the job itself. Go to the machine, follow the path an operator takes, and build the steps in that same order, preferably together with an actual operator. Systems, such as CheckProof’s Checklist Builder App, that lets you build checklists directly in the app next to your assets, is a helpful tool for this. Keep each line short and action-focused so the flow is easy to follow. Use clear photos from the actual equipment, not generic images, and only include the details that matter - e.g. torque values, lockout points, grease types, measurements, and any “red-state” conditions that should stop the job.

Good work instructions make the safest, most reliable way to do the task obvious, even for operators with mixed experience levels. That means matching the real sequence of the job, calling out hazards at the right moment, and ending with a simple picture of what “done” looks like.

Work Instruction Template

Below is a work instruction template for a jaw crusher cheek plate replacement for a sample machine we will call “JC-204”. As you will see, work instructions do not need to be overly complex, even if the procedure itself may be complex - rather the opposite. The easier and clearer they are the better, but the most important part is to adapt them to the actual individuals who will be performing the actual repair.

Always involve the operators themselves in the process of creating a work instruction to ensure they are not overly complex and get the instructions across in a logical and easy to understand way.