We are working on a jobs and skills website (similiar to Skill Pages) and are deciding on categories. Rather than having load of categories like, for example, Builder, Electrician, Carpenter etc, we would like to have one word more general categories.

So for example we have House, Computer, Education, Art etc. So a builder would be in category Home and a few others. Will this style negatively effect our SEO and ranking? And if so, should we abandon and go back to traditional categories and sub-categories?