From Tallinn Airport, the easiest way is to take a taxi. The journey should cost around 20 euro.
From Tallinn Airport, harbour or Tallinn city. Follow signs to Pärnu. The trip out from Tallinn takes about 20 minutes. Well outside the city limits, you have approx. 15 km to the exit Saue. Take the exit towards Saue (right), then take the first road to the right. There you see the sign Fors MW. The main office is in the annex 100 m from the sign.
Drive towards Tallinn via Pärnu. Approx. 15 km from Tallinn's city limits, take the exit to Saue (right), follow the road until you pass a petrol station on your right, immediately thereafter, take first right, then immediately right again, drive around 300m until you come to the Fors MW sign. The main office is in the annex 100 m from the sign.