Does cron jobs per se represent a significant burden on a modern system?

I would love to run a rather straightforward manuscript (exists a dir with name x in dir y if so relocate to dir z-- and also x will just exist around daily) every 15 secs approximately (one min separated right into 4 * 15 secs). Does running cron work like that (where the manuscripts they run are not source extensive) have a non - neglible adverse influence on performance, stability or anything else?