The number of people in a job in Scotland rose by six times the population of Fort William last year, according to Treasury Chief Secretary Danny Alexander.
The Liberal Democrat MP will make the claim today as he says the growth Scotland is experiencing is, in part, down to the "strength and security of the UK".
It comes as the battle to claim credit for the growing economic recovery heats up.
And he will call on Scots to reject independence saying "we are better off together".
Yesterday the SNP also claimed credit for the improving state of the economy.
The party pointed to a report by the Scottish Chambers of Commerce which found that the manufacturing industry in Scotland was enjoying its highest levels of investment for six years.
SNP MSP Jamie Hepburn said: "This report is further proof that the actions the SNP is taking in government to support and strengthen the Scottish economy are paying off."
Industry confidence would only improve further after independence, he added.
Today, in what aides say will be a "positive and upbeat" speech at an independence debate hosted by the Lochaber Chamber of Commerce in Fort William, Mr Alexander will say that since early 2010 employment in Scotland has risen by 139,000 jobs, almost the equivalent of the entire working age population of the Highlands.
He will say: "These jobs are being created because of the hard work of people and businesses and because we are part of the sixth largest economy in the world - the UK.
"Scottish businesses are able to create these jobs, because they are supported by the strong, stable UK economic framework, trading simply and easily in all parts of the UK.
"And supported by policies I have put in place to make the UK more competitive: income tax cuts for working people, more competitive businesses taxes, an economic plan that works for Scotland."
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