Salaams Hazrat.

- On the 25th of October, I was suffering from  a fever, and Gastroenteritis (vomiting and diarrhoea) overnight, so I was rang in to tell my employer, I am not coming in.

- The next day on the morning of 26th of October, I rang in suck again. My fever had subsided, but I still expected not to have fully recovered from diarrhoea, as generally it can take days to settle down. The agreement with the employer was, if miraculously I feel better through out the day, I should come in and for the remainder of my shift. 

- As the day (26th of October) progressed, surprisingly my diarrhoea had gone, so at this point I was obligated to back into work, but my mom raised an interesting point. she forbade anyone to visit our home because 5 members of my family were affected one after the other (me included) indicating that this viral infection is clearly contagious.

- After doing some research, it can contagious up to 2 weeks from the point of recovery:

You're most infectious from when your symptoms start until 2 days after they've passed. Stay off school or work until your symptoms have stopped for 2 days.

- So, based on this discovery, I decided not to go into the work to complete the remaining hours left in the day.

Questions:

1) Considering officially I was given "statutory sick pay" for 26th October based on being sick, can I still accept it as halal income even though in reality my reasons for not coming to work was based on not passing on the virus to someone else? I am confident, that any employer would not allow an employee to stick around, and infect colleagues, and would instead send them home. 

2) If I inform my manager of the above reason, would it this be justified, and halal under the shariah?

Jazak'Allah.