If there is a worker in the house and no one else in the house except my family, is it permissible for me to go to the mosque to pray and leave the worker alone?

The questioner : Shaykh, sometimes a person is with his family and hires a worker to fix something in the house. When the time for prayer comes, is it permissible for him to leave his family and go to pray, or is the opposite correct, meaning he stays and leaves the mosque?

The Shaykh : ... So we consider this question incorrect unless a correction is made to what I am saying. The question should have been: Is it permissible for me to leave the worker and not take him with me to the mosque? Unless you say, "I have been cautious in the matter," or unless you say that he is not a Muslim. Well, of course, it is possible that the worker is not a Muslim, and it is possible that he is a Muslim, and this is a common occurrence.
We find that many Muslims have workers in their shops, so they leave the workers, who are Muslims like them, and go to the prayer place without caring about them. This is a mistake; he is responsible, as he (peace and blessings be upon him) said: . However, if this worker is not a Muslim, the matter is as he (peace and blessings be upon him) said: . In that case, we can proceed directly to answering the question and say: If this worker is outside the house such that if his soul were to prompt him to do something reprehensible, or—may Allah not forgive it—the woman of the house likewise, then if he is outside the house, he cannot do so. And if the owner of the house locks the door between him and the worker, there is no harm if he has doubt about the woman of the house. But if he has trust in her, she locks the house from the inside, and the worker is outside, then there is no harm in that case for him to leave him and his work, and the owner of the house proceeds to the mosque and prays with the congregation of Muslims.
In short: one must be cautious and careful so that nothing happens that is not...