The different rounds of interviews have different test of a different quality. Now there are at least 4-5 interview rounds in all big companies. The interview is conducted keeping in mind all the convenience and time. Lots of things are considered before scheduling an interview. The openings, the HRs, the working days etc. But at times due to some genuine reasons interviews are rescheduled.
People for interviews come with a prepared mind. It is not good to reschedule the job interviews often. Only if it's a genuine reason and has no other alternative, then only you should reschedule a job interview. The job candidates prepare themselves as per the set interview schedule, and if there are changes then it might not be possible for the job candidates to prepare themselves again or be available for the re-scheduled interviews.
The job candidate's availability is a major concern. Their availability should be given more importance, otherwise if there are no sufficient candidates then there is no use of holding interviews for jobs. The job interview means a lot for job seekers. People in need of jobs look for different jobs interviews to end up getting one job out of the many interviews. Therefore, try to keep the job interview re-scheduling to its minimum as much as possible. The job interview re-scheduling will loose interested and qualified candidates.
The job interview re-scheduling can also have cost you more. The re-planning and re-organizing involves more cost and effort. The most important thing is time; the time should not be wasted at any cost. Time is a big resource in any organization. Therefore, the job interview re-scheduling should be avoided as much as possible and acceptable only at valid reasons.