I lived with the "what if" scenario for a few years. If the aircraft I required to take me to work diverted I (would have , didn't have to , I was lucky for 2 years
) called in sick . . . . . simple, not because I am a lying bar steward, but because my company would have used "the truth", involving THEIR flight to crucify me . . . as per company SOP.
This, can happen, but , for anyone using the M25 or indeed any myriad of motorways/autoroutes/autovias/freeways anywhere worldwide. . .well, any of us can be screwed & stuck in a jam for 2 ? 3 ? 6 ? hrs. . . s - - t happens ! unfortunately Crewing Depts in "some" companies have to ignore this reality, because some ass who is being employed on much higher costs than a decently fed Rotweiller would cost (& usually has LESS intelligence) is breathing down their neck.
Just remember "I am sick " . . . . . .