Related for Berakhot 31:2

One who reads the Shema and makes a mistake, and [he] does not know where he made the mistake, [he] should go back to the beginning of the [first] paragraph. If he made a mistake in the middle of a paragraph, he should go back to the beginning of [that] paragraph. If he made a mistake between the first [verse that mentions] writing and the second [verse that mentions] writing, he should go back to the first [verse that mentions] writing.

Workers [must] read [the Shema even while they are sitting] on top of a tree. And they [can] pray [Shmoneh Esreh] on top of an olive tree or on top of a fig tree. But [if they are on top of] all other trees, they [must] go down to pray [Shmoneh Esreh]. The owner of the house [must] go down regardless [what kind of tree he is on top of] and pray [Shmoneh Esreh]. Workers [must] read the Shema and say a Beracha (blessing) before it and after it. [When] they eat their bread they [must] say the Beracha before it and after it. And they [must] pray three times [a day] Shmoneh Esreh, but they do not go in front of the pulpit [to lead the congregation].

Workers that were doing [work] by the owner of the house [when they have to say Birkat Hamazon (Grace After Meals)] they say [only] two Berachot (blessings) [instead of the four usual Berachot]. [The way they say Birkat Hamazon is as follows.] He (i.e. the worker) says the first Beracha [in the regular fashion]. [Then] he combines [the Beracha] of Jerusalem (i.e. the 3rd Beracha) with [the Beracha] of the land (i.e. the 2nd Beracha) [into one Beracha], and he seals it off with [the ending of the Beracha] of the land. If [the workers] were doing [the work] for him [and receiving] their meal [as pay, instead of money], or the owner of the house was saying the Birkat Hamazon for them [because he ate together with them, even if they were getting paid money for their work, then] they (i.e. the workers) say [all] four Berachot. [These are] the things during meals regarding which Bet Shammai and Bet Hillel argue. Bet Shammai say, “[When a person makes Kiddush on Friday night,] he says the Beracha for the day [first] and [only] after that he says the Beracha on the wine, because the day causes the wine to be brought out, and since the day already began, however the wine has not been brought out yet [until later that evening].” And Bet Hillel say, “[When a person makes Kiddush on Friday night,] he says the Beracha for the wine [first] and [only] after that he says the Beracha on the day, because it is the wine that causes the holiness of the day to be discussed. [Besides this there is] another explanation. The Beracha for the wine is common and the Beracha for the [Shabbat] day is not common.” And the law follows the words of Bet Hillel.