Is work one of the excuses for which it is permissible to delay prayer beyond its time?

Doing righteous deeds when one is careless about prayer

His boss doesn’t let him pray

He hears the call to prayer but he does not respond

Ruling on marriage contract with one who was not praying then Allaah guided him

He goes back to sleep after waking without praying

He uttered the Shahaadatayn but he does not do any of the obligatory duties

Are the scholarly differences concerning one who does not pray and ruling by laws other than those revealed by Allaah to be taken into account?

Ruling on one who reads Qur’aan but does not pray

Eating the food of one whose income comes from selling wine