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What do they mean?
1. I have to call in sick. What does it mean?

2. A: Maybe I have a the flu. B: How long will you be out?
What does " how long will you be out" mean?

3. Do you know how much sick leave I have left?
Can I use "how many"?

4. Other than "sick leave", do you know any other leave?
maternity leave
What else?
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Jenny chiu1. I have to call in sick. What does it mean?
I have to call my boss to tell him that I am sick and that I won’t be able to work today.
Jenny chiu2. A: Maybe I have a the flu. B: How long will you be out?
What does " how long will you be out" mean?
Presumably, in this context, When can you come back to work?
Jenny chiu3. Do you know how much sick leave I have left?
Can I use "how many"?
No.
Jenny chiu4. Other than "sick leave", do you know any other leave?
maternity leave
I can’t think of any others just now.
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long-term disability leave


vacation (not usually spoken of as leave)


Here are some other types, from a Canadian website.

In general, employees are entitled to leaves of absence for the following reasons: pregnancy, parental and adoption responsibilities, illness, family emergency, bereavement, to serve on a jury or as a witness, and to vote. Leaves can be with pay or without pay.

Leave policies and practices must comply with the minimum standards required by law, which vary by province and territory.


Clive