Qikz, you're working too hard.
Your manager is doing the responsible thing which is to ensure you are taking adequate rest when you are ill, or this will have longer term health implications as well as being kind of human rights issue.
It's important to recognise when you are eligible to take time off sick, and when you are told to go home because you are sick. People do not admire others who insist on working even when they are ill. This is a falsehood.
If you are ever concerned about docked pay due to sickness, tell your manager that you are facing financial trouble and you would greatly appreciate some paid sick leave. They will probably accommodate you unless repeated sickness is suspect, which in this case, it certainly isn't.
Your contract states that sick pay is awarded at their discretion.
Statutory Sick Pay (SSP) is legally required payments to you that you can claim if you have a doctors note, but only after 2 days of calling in sick. These first two days are called "self certified" which means, you are allowed to say, "I am sick", and it's up to your manager whether or not they believe you. In terms of SSP you are NOT paid for these 2 days (or any instance or sequence of 1/2 days at any other point, only in succession. For example if you take 3 individual sick days during a month you will not get SSP for the 3rd day.) You get SSP from the 3rd day in a row, not including weekends or other days where you normally don't work. The company is able to claim this money back from the government, so it is a kind of benefit. I believe it was about £2.80 per hour, barely anything really.
The reason it waits 2 days to kick in, is to prevent people taking the piss, on the governments terms. But most good companies will offer sick pay, in this case, they just decide to treat it on a case by case basis. If they decide to pay you for a few days sick it won't have any affect on your payslips. If you are paid SSP only it will show up on your payslip as a line called SSP or Statutory Sick Pay: whatever. They might write down the days of paid sick leave on your payslip too. I doubt they will give you both.
On good behaviour/performance, it's reasonable to assume that they would award you sick pay.
Don't worry about this too much, it just happens.
For the record, I only had SSP and was off for 2 weeks once and it was gooseberry fool. I couldn't pay for some things. In which case, the answer is, take care of yourself and don't get sick for long periods, which is what happens when you don't take sick days for shorter periods.
Nobody can just work 100% forever. You'll end up killing yourself.
Relax and remember that taking a day or 2 or 3 off to recover from an illness counts as "doing a thing" and remember it is part of your duty as a worker to take care of yourself and therefore your ability to work, as much as it is to work effectively when you are well. If you feel guilty about this on your sick days, I find it helps to tell yourself occasionally that "I am on a sick day, I am taking care of my body. I'm doing no work today and that's fine." Just watch Netflix or play games or whatever. Drink plenty of water and remember to eat well. Normally you'll be fine after a couple of days.
It took me quite a long time to understand that.
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