The law on workers in work pool
A work pool may exist although the workers in the pool do not receive salaries and are free to seek other employment during temporary breaks in the business, provided that the worker shall be available when called to report for a project. Although primarily applicable to regular seasonal workers, this set-up can likewise be applied to project workers insofar as the effect of temporary cessation of work is concerned. This is beneficial to both the employer and employee for it prevents the unjust situation of "coddling labor at the expense of capital" and at the same time enables the workers to attain the status of regular employees. (G.R. No. 116781)