Work has resumed in a limited capacity on the £700 million Paradise project in Birmingham city centre.
The project's development manager Argent has announced that contractors BAM Construction º£½ÇÊÓÆµ and Sir Robert McAlpine have decided to recommence work this week.
It paused recently following government guidance over working on construction sites as a result of the coronavirus outbreak.
BAM is delivering the second office building, Two Chamberlain Square, which is due for completion later this year while Sir Robert McAlpine recently started construction work on building three, One Centenary Way.
BAM is also putting the finishing touches to the first building One Chamberlain Square which recently welcomed financial services firm PwC as its principal tenant.
Indian restaurant chain Dishoom has also been forced to delay the launch of its new Birmingham restaurant in this building because of coronavirus.
Argent's regional director Rob Groves said: "After a thorough review of operations at Paradise Birmingham in light of the very latest guidance from the Government, BAM Construction º£½ÇÊÓÆµ and Sir Robert McAlpine have decided to recommence work from April 6 to help deliver progress across Paradise.
"New risk assessments have been carried out on a site specific basis and the decision will be reviewed regularly to ensure everyone is adhering to the very latest guidelines.
"There will be a considerably smaller workforce operating at Paradise at this time but this decision will help to sustain direct contractor jobs and in the associated, local supply chains."
Argent said all on-site contractors would be wearing full protective equipment including masks and practising social distancing during their work as well as adhering to all other government guidelines.
It said this approach adhered to the new site operating procedures developed by trade body Build º£½ÇÊÓÆµ and the Construction Leadership Council required under the Coronavirus Act 2020.
The work being undertaken "will be limited in scope" in order to maintain the highest levels of safety for employees, the supply chain and the wider public, Argent added.