The answer depends on various factors and situations of the candidate student.
If the family or person needs financial support immediately, then job is the immediate priority. But the family financial situation is good and can afford to support a few more years further study, then iis better to pursue some suitable and relevant further higher course of study.
Similarly if the age of the person is in late twenties, the better to join a job. But if it is normal age , and has not lost any academic year, then further study is not bad.
If the candidate has some specific goals and ambitions, and is very clear about the what, where and how of achieving that, then he should pursue the best higher study course for achieving that goal.
Another factor is how was the till now academic graph. If the graph was a climbing one, and the person feels that he can continue the trend and excel in the further course also, then he can pursue the higher studies with confidence. If the past academic graph was declining and the student is not confident of fetching good grades , then it is better to join a job.
There are some areas or jobs, where there is not much scope of pursuing higher academic learning in that field ot subject. If so it is better to finish the maximum possible degree/course on that which can fetch a good job at start itself.
But if the study is a general course, which can be pursued for higher learning by distance education, non-formal education etc, then it is better to join a job and then continue the studies along with the job.
If you are an excellent student till now, and you are sure to get admission fo your dream course in a good reputed institution, and that you are sure you can put up hard work and excel yours elf in that course also, and the job after that will be a better one than what you may get now, then better pursue higher studies.
Otherwise, and if the family situation needs support from you, join a job and pursue higher studies relevant for further career growth in that job or field.
(There was a GD in ISC forum "Opting for a career before pursuing higher studies or vice-versa - active GD". You may get some more inputs from that too)