Dear Vanitha,
Thanks for the question and for believing in the CiteHr site, members, seniors, and moderators as good advisers.
There have been many good suggestions given by all respected seniors, moderators, and members. Some have been taken sensitively, some expressed professionally, and some generally.
With these different types of views, I hope you can easily reach a conclusion and implement or handle this simple issue professionally. I just want to mention a few points as others did.
1 The mentioned issue is not big, so it's not necessary to involve higher management, but for your safety, you can address it. (But keep in mind, as a good person, no one should be affected by losing their job.)
2 Only two mandatory prayers occur during office hours. The afternoon prayer (Zohar) can be merged with lunch time, and for the evening prayer (Asar), you can allow just 15 minutes.
3 If work is getting affected because four or five people are leaving together for prayer, you can request them to go in pairs. Once they return, others can go. Prayers can also be offered individually or in groups of two or three at a time.
4 You can suggest they bring a prayer rug/carpet and allocate a small, clean area for them to pray individually or in pairs. This will help avoid delays from going out to the mosque and returning. (This is what I currently do.)
5 Inform the employees going for prayers that the time allowed is just for prayers, so kindly don't misuse it. (The person who asks for time for prayer may mean it, but I know some misuse it, as mentioned by many comments and suggestions, just to escape from work, which is really not tolerated.)
6 Lastly, in my view, if a person offers prayers, whether Muslim, Hindu, Christian, or Sikh, they do so from the bottom of their heart, which helps them avoid thinking or doing bad. This, in turn, increases the company's productivity.
So kindly address this matter easily and implement some simple rules for the benefit of the organization as well as the employees.
Thanks.