休憩させてよって英語でなんて言うの？

Well, it depends rather on the arrangement that is in place for taking breaks. If it is about time for a scheduled break, then you could ask: "Would it be alright if I take a short break?" If it is an unscheduled break as you are working together on something, you could make a request but probably, it would be better to give a short explanation as to why you need a break: "I need to go to the bathroom. Is that OK?" If it is a more casual situation, you could just say: "Is it OK if I take 5?" which means ' take a break for five minutes' although it could be longer. Take five = used to tell someone, or when someone wants, to stop working and relax for a short period of time.

This is the most commonly used expression in the UK. or you can ask the question based on when your boss wants you to take the break. e.g. When can I take my Break?

Depending on how long you want the beak, if it is for a long time you can ask for leave days. If you want a break for just that day you ask to leave early.

to take a break - this is what you would ask in order to have your break Is it ok if I take a few? - the implication here is that you would take a short break, hence a "few"... can i take a few minutes, seconds, etc. The speaker will understand what unit of time you're referring to based on the context so no need to say, for example, minutes or seconds after the word few. You can also say "I'l be back in a few," and this means I'll be back in a short while. Also, "can I call you back in a few?"

The word 'please' functions both as an adverb and a verb. In this instance, it has been used as an adverb. The adverb 'please' has several meanings, but, in this context, it has been used to express politeness'. If you are going to make a request from your boss, it is always courteous to be polite and use the adverb 'please'. So, you may politely ask: May I have a break please? or You may want to take a coffee break in which case you may ask: May I take a coffee break please?

"Let me take a break" - to have a short rest period in one's work or studies, other activities. Also, I recommend to think about the second one because it's a more polite version.

If you want to take a break and it is not your scheduled break/lunch time then you can ask permission to take a break by saying 'Is it okay if I take a short break?' Asking to 'take 5' means that you need a 5 minute break. Whether it's to use the bathroom or just get some fresh air. You can use any number. For example, 'Do you mind if we take 20 and meet back here at 5 pm?'. If you have a scheduled break or if you have flexible break times then you can say 'I'm going to take my break now.'

Both of these phrases have the same meaning when asking to take a break from work. The main thing to notice with these questions as these are a very polite and formal way to take a break, as they are both are asking for permission.