It is not permissible to delay the prayer beyond its time because of work. Allaah says (interpretation of the meaning):
“Men whom neither trade nor sale (business) diverts from
the remembrance of Allaah (with heart and tongue) nor from performing
As‑Salaah (Iqaamat‑as‑Salaah) nor from giving the Zakaah. They fear a
Day when hearts and eyes will be overturned (out of the horror of the
torment of the Day of Resurrection).
That Allaah may reward them according to the best of their
deeds, and add even more for them out of His Grace. And Allaah provides
without measure to whom He wills”
[al-Noor 24:37-38]
So you must organize your time at work in a way that will not
interfere with your performing the prayers on time and work out an
agreement on a suitable solution with the administration, even if that
causes you some difficulty, such as working extra hours, for example.
Note that the benefits of increased faith in your heart that you will
get as a result of praying on time will compensate for any difficulties
you encounter, and that hardship will turn to joy – in sha Allaah –
because you will be putting up with it for the sake of Allaah and
seeking His pleasure.
(taken from islamqa)
May Allah guide us to the straight path.
Ameen