Is multitasking good for any administration/office works? Does it create health issues?

Thanks 

Yes, it is, since the administrative clerk hired  to do month than one tasks, in the globe every administration job include not less than 15 tasks daily and in my opinion it is healthy issue 

 ..........Yes as Mr . Omar Saad

Without having multi tasking skills none can deliver his/her job perfectly/smoothly as well as there is not any health issues.

full agree with answer given by Mr. Omar

Specialization is the key to success and progress. But I believe in the plurality of functions provided that there is an experienced leader. Even if accompanied by the plurality of tasks or existed some problems, health problems and they get used to their presence