The operator said it was reviewing its timetable to ease the pressure on staff still working out of its Bannockburn depot.
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Severe accident: M876 Falkirk both ways
BBC News TravelM876 Falkirk both ways severe accident, from J2 for A9 Stirling Road to M9 J8.
M876 Falkirk - M876 partially blocked and it's slow from J2, A9 (Larbert) to M9 J8, Hill Of Kinnaird, because of an accident.
To report traffic and travel incidents dial 0330 123 0184 at any time
By Katie Hunter
BBC Scotland reporter
By Paul O'Hare
BBC Scotland