In recent weeks, upcoming strike actions have been announced by nurses, rail workers, postal workers, ambulance workers, airport staff, Border Force agents, highway workers, Eurostar staff, civil servants, bus drivers, firefighters, charity workers, meteorologists and offshore workers.
For the public sector, real earnings were 5 percentage points lower, and Hollingsworth suggested that the growing gap had become "unsustainable."
"I think there's clearly a lot of pressure here for some catch-up on the public sector side of things, and it's clear that there is that labor bargaining power there."
"However, the gap between private and public sector pay narrowed slightly, with private sector pay up 6.9%, while public sector pay is up by 2.7%."
However, with negotiations remaining fraught and unions showing no signs of backing down, he said some catch-up on public sector pay growth will likely be required to prevent further disruption.