The phrase "as useful work" is correct and usable in written English.
It can be used when discussing the value or productivity of a particular task or effort in a specific context.
Example: "The research conducted by the team was recognized as useful work that contributed significantly to the project's success."
Alternatives: "as productive effort" or "as valuable contribution".
Although they give helpful advice about working efficiently, their techniques often encourage the tendency to cram in as much useful work into a day as possible.
Thermal energy cannot be converted to useful work as easily as the energy of systems that are not in states of thermodynamic equilibrium.
The laws imposing these obligations affected only labour groups serving the army and the capital (or capitals, plural, after the promotion of Constantinople); and, to identify them, induce them to serve, and hold them in their useful work, emperors as early as Claudius had offered privileges and imposed controls.
The proposed framework establishes dynamic relations between physical concepts such as stored energy, useful work, and wasted energy, on one hand; and modeling, simulation, and control of interactive modular complex dynamical systems, on the other.
Productivity was defined as functional activities/work (useful work) including working for pay, being a student, housekeeping, and volunteer work in the past 3 months.
To determine whether rapid-incremental work rate (IWR) testing would be as useful as standard high-intensity constant work rate (CWR) protocols in eliciting exercise-induced bronchoconstriction (EIB) in susceptible subjects.
They can use their new freedoms to do useful work, both as backbenchers and as searchers for new political directions.
She is obliged, according to her own rules, to tolerate Chihiro as long as she is prepared to do useful work.
Sometimes showing something that doesn't work is just as useful.
If a gap year isn't for you, taking on a summer job (or part-time work) is arguably as useful.
