Professional services are so compartmentalized! Professionals impose boundaries on their expertise and their services. They have to. They cannot be, know, and do everything. But do the boundaries make sense? Do the boundaries exist in the real world?
If the boundaries don't reflect real world boundaries, then the professional's advice and efforts are going to reflect ARTIFICIAL distinctions. Is that a problem? Not necessarily, one might say, particularly when the client's troubles are few and within a narrow subject area.
HOW DOES THE PROFESSIONAL KNOW THE CLIENT'S TROUBLES ARE FEW AND NARROW IF THE PROFESSIONAL CONFINES HIS/HER ASSESSMENT TO A NARROW FIELD?
The blind are leading the blind.
Many if not most client needs have a ripple effect: they give rise to other issues and they themselves are caused by other issues. Client needs are almost inherently multi-issue and multidisciplinary. Any professional who denies this is asking for trouble--trouble for himself/herself and for the client.
Fine, have the guts to tell the client that. Broaden your knowledge base, enough so you can spot issues outside of your perceived area of expertise. And collaborate with other kinds of professionals to serve the client properly.
http://xbplanning.blogspot.com/2012/10/i-just-deal-with-immigration-issues.html