Certainly Outlaw. But ......
(Extract from OMA):
Flight duty is prohibited when a crew member’s capacity for work is reduced because of illness or general physical condition. Decrease of fitness includes the effects of disease, injury, alcohol, drugs, fatigue, etc.
In case of inquiry (inquisition) simply refer to the above
(Extract from the OMA):
Decrease of fitness under the influence of mental stress may also occur. It is the responsibility of the crew member to decide whether or not he is fit for flight duty in such circumstances.
In case of harassment as you described, refer to the above
We need balls to point at the legal defences that are available. Just pressing 2 is not what i meant. Calling in sick or fatigued (better) must be accompanied by valid arguments.
Imagine making a mistake under fatigue or stress, it will not hold as a defence, they'll be all over you with above articles if you invoke fatigue or mental company stress.
Look after yourself guys.