I guess it depends upon the type and size of the job in question. A lot of my work is invoiced upon commitment or completion, and in some cases (as with Unileve

I guess it depends upon the type and size of the job in question. A lot of my work is invoiced upon commitment or completion, and in some cases (as with Unilever here) it's simply decided that their terms over-ride that on my invoice somewhere after the event. I tend to disagree with that mentality.