It would be better to d it in Word if he needs to edit later (not to mention that MANY potential employers require Word format and will toss a PDF in the trash because the person submitting obviously can't follow directions).
Any reason for using InDesign for formatting the CV?
CVs always require regular updating - everything from text tweaks to full-on re-structuring the layout.
Word seems to be the ideal tool for this - it's ubiquitous and everyone can use it - rather than a specialised tool such as InDesign.
Plus, as Peter says, employers may want a .docx/.doc format submitted.