I received an email from the MEC addressing the requirement from our company for a doctors note if calling in sick. A pilot is basically self certifying every time they decide to fly an airplane. No company can legally require a doctors note! Please reference below. This topic seems to rear its ugly head through out time.

61.53 Prohibition on operations during medical deficiency.
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(a) Operations that require a medical certificate. Except as provided for in paragraph (b) of this section, a person who holds a current medical certificate issued under part 67 of this chapter shall not act as pilot in command, or in any other capacity as a required pilot flight crewmember, while that person:

(1) Knows or has reason to know of any medical condition that would make the person unable to meet the requirements for the medical certificate necessary for the pilot operation; or

(2) Is taking medication or receiving other treatment for a medical condition that results in the person being unable to meet the requirements for the medical certificate necessary for the pilot operation.