Reasonable tendency is a drafting problem before it is a legal one
An employer cannot control how a rule is read by explaining afterward what was intended. The explanation is not in the handbook, and the handbook is what employees have.
That makes breadth the operative property. A rule reaching further than the interest behind it will reach conduct nobody meant to cover, and the further it reaches the harder the narrower-rule question becomes. Narrowing a rule to the conduct actually at issue is a writing task with a legal consequence, and it happens at the sentence.
The four faults an editor finds without a legal opinion
The first is a rule stated at a level of generality nobody could apply. A sentence forbidding unprofessional conduct or inappropriate discussion covers whatever a reader supposes it covers, and different readers suppose different things.
The second is a promise made by accident. Handbooks routinely say the company will do something, when the intended meaning was that the company may. Will and may are the same length and are not the same sentence, and the difference is what a later reader is looking for.
The third is a contradiction between sections. A progressive discipline schedule in one chapter and an at-will statement in another can be read together in a way neither drafter intended. Contradictions between sections are exactly what copy editing is defined to catch: resolving variations in terminology, logic, and mechanics, and maintaining the style sheet that records the decisions.2
The fourth is a defined term that drifts. A handbook that defines employee in the introduction and then uses staff, personnel, team member, and associate interchangeably has four terms and one definition.
Consistency across documents, not just within one
The handbook is rarely the only document making the promise. Offer letters, policy notices, an intranet page, and a training deck often restate the same rule in different words, and the version a reader relies on is whichever one they saw.
An editor can inventory that family: every place a policy is stated, and what each version says. Editors Canada's copy editing standards cover checking for missing information, flagging places that need citations or acknowledgment, and ensuring that tables and visual elements agree with the text.2 Applied to a handbook, the same discipline produces the list of places where the six versions of a rule differ.
Nobody enjoys compiling that list. It is also the only document that tells an employer what they have actually said.
Readability is not a soft consideration here
A rule that employees cannot follow does not serve the interest behind it. Editors Canada's stylistic editing standards ask for wording made precise, ambiguity resolved, wordiness eliminated, and plain language principles applied with vocabulary and concrete terms appropriate to the reader.3
The federal definition of plain writing says the same thing in a sentence: writing that is clear, concise, well-organized, and follows other best practices appropriate to the subject and intended audience.4 A handbook meeting that description is easier to comply with and harder to misread, and both of those matter when the document is read the second way.
Where an editor stops
An editor does not decide whether a rule is lawful, whether a policy is enforceable, whether a handbook creates a contract, or how a board or a court would read any of it. Those determinations belong to the employer and its employment counsel, and they arrive with the copy.
Everything a client sends is treated in confidence, including draft policies, personnel material, and correspondence with counsel. EditFast works on employee handbooks and HR manuals at the level of wording, definition, and consistency, and reports what reads two ways.
The most useful brief for this work marks which sentences counsel has already approved. Those get checked for consistency and left alone. Everything else can be made clearer without anyone having to guess what was deliberate.