How does one pray if his workplace is far away and ritual impurity affects his clothes from work, and if he waits to return, the prayer time is lost?

The questioner:
May Allah reward you, Honorable Shaykh. This questioner says: My workplace is twenty-two kilometers from my home, so sometimes I get ritual impurity on my clothes while performing the ablution. He says: My workplace is twenty-two kilometers from my home, so sometimes I get ritual impurity on my clothes while performing the ablution for the midday prayer. If I go home, the prayer time passes, and I am also late for work. And if I combine the midday prayer with the afternoon prayer because of the distance, I fear sin. What is obligatory for him?

The Shaykh:
The ritual impurity on his clothes.

The questioner:
Yes.

The Shaykh:
The ritual impurity on his clothes: he should carry a pure garment with him and keep it for prayer. When he wants to pray, he takes off the impure garment, puts on the pure one, and prays immediately. This is easy and simple for him.

The presenter:
May Allah reward you, Honorable Shaykh. This questioner says:

The Shaykh:
When he finishes the prayer, he puts on the first garment. Yes.