How long should a business case analysis take?
How much labor should go into it?
More to the point, where's the case for building your business case?

Business case results include cash flow projections and practical guidance for managing actions and investments.

A serious business case building project may require serious project effort. This is especially true when when supporting a proposal with major impacts in a complex business environment. Participants in our business case seminars report that professional labor requirements can range anywhere from several person days at the low end to many person weeks on the high end.

Those who build the case and their managers naturally want to know if the project is worth the time and effort. They may ask: "Can the people who propose business case analysis practice what they preach and present the business case for building the business case?" Read more of this post