Livingston won their first match since the departure of manager Gary Bollan to overtake opponents Partick Thistle into fourth place in the Scottish First Division.
Liam Fox picked out Marc McNulty to stroke the ball into the bottom corner for Livi's opener on 37 minutes.
Paul Watson headed home Robert Barr's cross in the opening minute of the second half to double the hosts' advantage and Kyle Jacobs soon added a third with a 20-yard strike.
Paul Cairney slotted home a late consolation for the visitors.
Livingston: McNeil, Ross Docherty, Craig Barr, Watson, Talbot, Keaghan Jacobs, Fox (Cummings 81), Scougall (Easton 89), Robert Barr, Kyle Jacobs, McNulty (Russell 70). Subs Not Used: Jamieson, Fordyce.
Goals: McNulty 37, Watson 46, Kyle Jacobs 52.
Partick: Fox, O'Donnell, Paton, Scott Robertson, Cole, Cairney, Welsh (Naismith 63), Rowson (Elliot 46), Bannigan (Griffin 56), Doolan, Erskine. Subs Not Used: Scully, Stewart.
Booked: Scott Robertson, Rowson, Naismith.
Goals: Cairney 88.
Ref: Steve Conroy