Adding to what has been said by others, as the name itself suggests, 'habitual absentee' means that the individual should be continuously absent on more than one occasion. After exploiting other methods like issuing warnings and suspensions, then he could be charged. Even then, other options like increment cuts, downgrading to the lowest scale of pay, and/or demotion to lower posts could be considered as soft punishments before the capital punishment of termination is decided upon following a formal inquiry.
I think this should be a fair exercise of natural justice from the employee's perspective. However, any decision would depend on the past record, performance, and conduct of this individual. We have seen a few known good workers who sometimes happen to be habitual spendthrifts, boozers, or dealing with unresolved family problems, failed love affairs, or broken relationships. These could be reasons for behaviors like this, but considering their caliber, they are tolerated if they are otherwise normal and competent when on duty and cooperate well with their colleagues in discharging their duties.