There's more to the employment prospects afforded by a degree than just the subject you study - it also depends on what university you get your degree from, the degree classification you get, and, as another poster already mentioned, what field you want to go into. Studying nursing, for example, would increase your employability dramatically if you want to work for the NHS (where 10% of nursing positions are currently vacant), and that specific degree is required by that field. However if, for example, you wanted to be a lawyer, having a law degree isn't going to increase your chances that much against someone who studied a different degree and took a conversion course, particularly if that person got a higher degree classification.