When you are working for hours behind a desk, it happens to be sitting on a chair. It is usually an office chair and although you probably never thought about it, it must be an office Work Chair.
Many of you think that the best chairs out there are the "executive" ones. It is a common mistake. People want to be treated like an executive but that does not mean that an executive chair is ergonomically sufficient for many-hour working on a desk/computer. I don't know in which criteria a chair is declared as an executive one. An executive chair, as in ads and manufacturers leaflets/catalogs, is usually a comfortable and imposing leather (or pseudo-leather/vinyl) chair. It is not mentioned in those ads and product catalogs that an executive chair is to be used for a slightly lay-back sitting position while conferencing – watching presentations – client meetings etc...