Half of the present workforce at the Arnish manufacturing yard by Stornoway will be paid off today.
Some 30 Bi-Fab employees will finish at the site as order books dry up.
Around 100 people were employed on site at the beginning of the year but numbers have gradually reduced to less than a third of that as major contracts are completed.
Components for a 8,200 tonne seabed foundation jacket for Premier Oil have been shipped out of Arnish to its parent yard in Methil, Fife.
The last remaining contract is for gas rig seabed foundation structures or jacket for GDF Suez’s development in the giant Cygnus gas field in the southern North Sea.
The last of four 131ft-high jackets is nearing completion so trades like the welders and platers are no longer needed.
Arnish is stopping its nightshift and the remaining personnel will work on day shift from now on.
Workers at Bi Fab’s yards in Methil and Burntisland are also being made redundant as the bulk of the £47million contract is delivered.
Neil Campbell, general manager at Arnish, said: “We are finishing the last big order and will be ticking over on dayshift.”
The Arnish yard is owned by the Stornoway Trust and leased to Highlands and Islands Enterprise which rents the facility to Bi-Fab.
Charlotte Wright, director of business and sector development at HIE, said: “This is clearly a difficult situation for those directly affected.
“However, it is in the nature of the energy manufacturing industry that job numbers fluctuate between one contract finishing and a new contract coming on stream.
“Arnish remains a valuable asset which continues to play a significant role in the oil and gas and emerging renewables industries in Scotland.”