<![CDATA[On the 13th December 1973 British Prime Minister Edward Heath announced a series of measures to conserve fuel in the United Kingdom.
For a fortnight from the 17th until the 30th December, industrial and commercial energy users would be restricted to only five days of energy consumption. From the start of the new year, the restrictions would be increased to only three days of consecutive energy consumption a week - essentially enforcing a three day working week.
For many, the introduction of the 'Three Day Week' symbolised the increasing power of trade unions, and particularly coal miners, to disrupt the whole country. The energy shortages are often considered to be a result of strikes in the mining industry.
The failure of Heath's government to effectively avert a mass strike was a key factor in its defeat in the election of February 1974. In the long term, the fear that trade unions could hold the country to ransom was key in the election of Margaret Thatcher several years later, whose government was characterised by mass privatisation and a curbing of trade union power.
There were of course other causes of the energy shortage that had pushed Heath's government into such drastic action. The coal miners' strike came just after the Oil Crisis of late 1973, when OPEC, (Organisation of Arab Petroleum Exporting Countries) the most important supplier of oil to the West, started an embargo which caused a drastic increase in the price of the vital commodity.
The coalminer's strikes came about as a result of the government's anti-inflation policies. Throughout 1973 a series of bills had passed that restricted income and put strict limitations on pay rises. By the summer this had already caused several major strikes throughout Britain, including 290,000 civil servants striking in February, and a 1.6 million worker nationwide strike on 1st May.
On October 8th Heath announced phase three of his counter inflationary policy, limiting pay rises to 7% and paying for improved pensioner benefits with a 9p increase in National Insurance Contributions.
On 12th November The National Union of Mineworkers (NUM) began an overtime ban, which swiftly led to the government declaring a state of emergency, as concern over energy reserves increased.
It has since been revealed in Cabinet Papers released by the National Archives that this overtime ban itself didn't facilitate the need for the Three Day Week. Rather, its implementation in late December was in anticipation of a general miner's strike being declared over the wage issue.