Is the 90 day time period the date the labor was provided or the date the labor was paid?

"Furnishing labor, professional services, materials, or equipment" means the performance of any labor or professional services, the contribution owed to any employee benefit plan on account of any labor, the provision of any supplies or materials, and the renting, leasing, or otherwise supplying of equipment for the improvement of real property. Does this mean that the 90 day period to file a lien is valid from the date the labor was last provided onsite or the date the laborer was paid for his services from his employer? What is making me question this is "the contribution owed to any employee benefit plan on account of any labor".