Business writing should:
• be easy to read
• be easy to understand
• offer, or ask for, clearly described actions.
This is what readers want, and it's a writing style that's usually described as 'plain English'. This style of writing tells readers quickly what they need to know and what we want from them.
It's in every organisation's interests to make sure communications are clear and written in a professional way. Any document that is long-winded, full of jargon or that contains mistakes in its grammar and punctuation will damage the organisation that produced it.