Prayer: Is performing lengthy recommended acts in government offices during prayer time appropriate?

Practical Laws of Islam as per the teachings of Imam Khamenei

Prayer: Is performing lengthy recommended acts in government offices during prayer time appropriate?

English:

Question #551:

What is your opinion as regards performing the mustaḥabb actions such as nāfilah prayers, Du‘ā’ Tawassul and other supplications in governmental offices before, after and during prayers? These acts usually take longer time than the actual congregational prayer itself.

Answer #551:

Any mustaḥabb action which is performed with the congregational prayer would be considered problematic if it becomes a cause for wasting time and delay in the performance of official duties there.

-Imam Khamenei, Practical Laws of Islam, Importance and Conditions of Prayer