We are trained to think in terms of associations, a Bachelor’s degree increases your probability of getting a job. A Bachelor’s and Master’s degree, it seems, the probability of getting a job is high too.
However, There maybe a negative dependence between getting a Master’s Degree and job prospects, although it is true that they pay more. The apriori probability of getting a job with a Bachelor’s degree is greater than the probability of doing a Master’s given that you already have a Bachelor’s degree!! I don’t have the data to confirm this, but I think it would not be too hard to prove! This is based on the notion that employers would prefer to hire either freshers or senior professionals rather than a Master’s student with a focus on one area of C.S.