This is partly due to the team-written nature of corporate documents. When work is brainstormed, planned, drafted, edited, revised, and posted or published by different writers, errors and simple inconsistencies occur. Rectifying such errors is time-consuming but necessary: most readers equate consistency with polish, professionalism, and ultimately, effective branding.
However, a style sheet is not just a reflection of a single document; instead, it’s an easy-to-follow template for all future writing. The style sheet can be transferred across departments so that a writer adding concluding remarks to a drafted client report need only consult the style sheet to determine whether “basis points” should be spelled out or abbreviated as plural.
With assiduous updating, a comprehensive style sheet constitutes an in-house style guide for departments.