"all contractors" is correct and usable in written English.
Example sentence: All contractors must complete the paperwork by the end of the day.
Not all contractors take that approach.
It was all contractors, and really there was no strategy.
The C.I.A. quietly withdrew all contractors after Mr. Davis's arrest, the Pakistani official said.
Most of all, contractors are appealing when a victory is possible in relatively quick order.
All contractors must identify places where beryllium may be present and notify employees.
"Ninety-nine percent of all contractors break the law," one says offhandedly.
I can't speak for all contractors, but financial management improvement has probably been a good value.
Yet Ms. Stoda, like all contractors, has to pay off the Taliban directly or indirectly to work in insecure areas.
Over time, courts provide stable yet context-dependent meanings for ambiguous terms, creating "public goods" that accrue to all contractors.
The United States military should take the lead by adopting — and requiring all contractors to adopt — American recycling practices.
