The ONS added: "Low labour productivity growth looks set to continue into the new decade as the UK economy faces further disruption.
"This sustained period of weak growth has been labelled the UK's "productivity puzzle" and is arguably the defining economic question of our times."
Output per worker fell more than output per hour
ONS
The ONS said it was too early to know if working from home increases or decreases productivity.
The statistics body said: "The coronavirus pandemic has forced employers and employees to adjust to new working schedules and arrangements, such as working from home, which may have either positive or negative impacts on the productivity of different parts of the economy."
Productivity likely deteriorated further in the second quarter when the UK felt the full force of government coronavirus restrictions. The country went into lockdown on March 23. Data for April to June will be published on October 7, the ONS said.