Would you call in sick on day 3 of a new job?
I never would. In fact, I rarely called in sick at all even when I was sick. Now I know that I am an extreme in the other direction but the first month of work is extremely important.
Of course there are things you need to call in sick for: raging fever, broken leg etc.
How about for food poisoning? A cold?
What would you think of an employee who did call in sick on their third day?