Related על סוכה 51:2

The writers of books [of the Tanach], of Tefillin (Phylacteries), and of Mezuzot interrupt [their work] to read the Shema, but do not interrupt [their work] for [the] prayer [of Shemoneh Esreh]. Rebbi says, “Just like they do not interrupt [their work] for [the] prayer of [Shemoneh Esreh], so too they do not interrupt [their work] to read the Shema.” Rebbi Chananya Ben Akavya says, “Just like they interrupt [their work] to read the Shema, so too they interrupt [their work] for [the] prayer [of Shmoneh Esreh].” Rebbi Elazar Bar Tzadok said, “When Rabban Gamliel and his Bet Din were in Yavneh, they were involved in the needs of the community and they did not interrupt [their work] in order not to lose [concentration] from their hearts.”