ELECTRICIANS at Wembley stadium had their skills cards checked during a mass inspection at the site yesterday (Wednesday).
More than 500 sparks working for main M&E contractor Honeywell had to present their documents to main contractor Multiplex.
The move followed a tabloid newspaper exposé last week that claimed electricians were working on forged papers and taking drugs on the job.
A site source said: 'The drugs claims are bad enough but Multiplex has gone bonkers about the forgery claims.
All the lads have been told to present their ECS cards for inspection.' Amicus union officials were also due to meet at the site with workers left out of pocket by the withdrawal of Honeywell subcontractor AR Security from the job.
AR left after a payment row with Honeywell and around 30 workers are owed a month's money.
Labour agency Beaver Management Services laid off nearly 50 electricians last week.
Site sources said the men were given one week's notice by BMS, which is subcontracted to Multiplex's M&E firm Phoenix Electrical, last Friday.
A BMS spokesman said: 'A number of people were laid off last week due to the operational requirements. The decision came from Multiplex.'