Relationship Question: What Is The Difference Between Casual Leave And Annual Leave?

Dear all,

One funny law has just recently been made in my office to the effect that, all your casual leave will be deducted from
your annual leave, now the impression i have gathered about the casual
leave issue is that the Nigerian Labour Law states that you are entitled
to five days of casual leave exclusive of your leave in a year.

Does anyone out there have an idea of what the law states on what the
general standard should be about issues like this, as i would really
like to take this up with the overzealous hr in my office always trying
to impresss the whiteys with so called “innovation.”