Collocations for workload - noun

enormous, heavy, huge | excessive | additional, extra, increased | lighter, reduced | administrative

have
She''s got an increased workload this year.

expand, increase | ease, lighten, reduce
An assistant one day a week would ease my workload.

distribute, share, spread
We want to try and distribute the workload more evenly.

cope with

expand, increase
Doctors are having to cope with an ever-expanding workload.