Is it permissible to delay a prayer beyond its prescribed time in order to fulfill a work contract, knowing that the times of the two prayers overlap? And is a work contract considered a legitimate excuse for this? And is it better to perform the prayer in congregation at the company or in the mosque?

It is not permissible to delay the prayer beyond its appointed time due to a rental contract, as this is considered a grave sin. The prayer time is legally excluded from the contract duration. As for going to the mosque for congregational prayer, the hirer may prevent the hired person from doing so, especially if it results in harm, unless this is stipulated in the contract or the hirer grants permission. Congregational prayer is valid in any place, and it is preferable for the hirer to permit the hired person to go to the mosque if no harm results.