What is the ruling on the questioner and the sanitation worker praying in congregation at the workplace instead of the mosque, and what is the ruling on dividing the attendance of Friday prayer between them, and what is the ruling on leaving the current job which the questioner believes prevents potential evils?

The fundamental principle is congregational prayer in the mosque, but it is permissible to pray at the workplace if going to the mosque would disrupt work. As for Friday prayer, it is more emphasized, and it is not permissible to miss it except for a narrow necessity, such as fear of destruction, harm, or a public interest. Therefore, you are required to go to Friday prayer and advise the landlord to do the same, and to leave for it just before the adhan to a nearby mosque that does not prolong the khutbah.