Electricians on the Spurs stadium site are earning £400 a day as the job approaches its opening deadline.
The Construction Enquirer understands around 500 mechanical and electrical workers are currently on the site on the heavily delayed project.
One industry source said: “They are paying big money at Spurs because everyone knows the job is working to a deadline.
“They are piling people in there and paying top dollar which is having a knock-on effect on other sites around London which are struggling to fill vacancies.”
The current hourly pay rate for a skilled electrician in London working under the JIB agreement is just over £20 an hour or £160 for an average day.
The cost of the project is projected to be £850m, although continuing spiralling costs could see it breach the £1bn.
More than 2,500 workers are currently on the site where construction continues around the clock to get the stadium finished for the new football season.
Spurs are planning to hold the first stadium test events in August and their initial Premier League fixtures away from home with the new 62,000-seater ground ready for September matches.