Contractor and developer also can claim EOT, so that shouldn't be worry. The thing to be worry is no work progress in March and April means no payment in May and June. March and April salary still can cover by previous work done.
Long term is weather the developer got enough cash to pay them and potential stop work if developer with bad sales or bad cash flow situation.
Many building construction stop work in 97 crisis. If not mistaken Plaza Rakyat and Hyatt hotel was one of them. Worry it happen now.