A fastener driving tool trigger assembly comprising: a bottom assembly (200) including: a pivotable trigger (210) rotatably attachable to a housing of a fastener driving tool, an actuation lever (230) attachable to the pivotable trigger, an actuation lever spring (250) attachable to the actuation lever to bias the actuation lever to a first position, a ramp (270) attachable to the pivotable trigger, and a damper mechanism (290) attachable to the actuation lever to control a rate of movement of the actuation lever; and a top assembly including: a top housing attachable to the housing of the fastener driving tool, and a downwardly extending block engageable with the actuation lever and the ramp to move the actuation lever to a second position different from the first position. A fastener driving tool comprising: a tool housing; a workpiece contact element; and said trigger assembly.