Prayer: Travelling for Another Purpose When One's Profession is Travelling
Practical Laws of Islam as per the teachings of Ayatullah Sistani
Ruling 1293
With regard to someone whose profession is travelling, if he travels for another purpose, such as ziyārah or hajj, he must perform qaṣr prayers unless he is commonly known to be a frequent traveller, such as someone who always travels three days in a week. However, if, for example, a car driver is hired for a ziyārah trip and on that trip he also performs ziyārah, he must perform tamām prayers.