Uber Technologies Inc. and other digital platforms are facing a setback in their attempts to avoid the reclassification of workers as employees, after Spain’s government finalyzed plans for the strictest regulatory reforms in Europe so far to deliver work.Spain’s government said late Wednesday that it had reached an agreement with unions and business organizations to regulate the employment conditions of delivery workers who work through digital platforms such as Uber Eats or Amazon.com Inc.-backed Deliveroo. The rules would require companies to contact their workers and disclose details of the platforms’ algorithms that affect working conditions. The proposals are a defeat for the digital platforms in their efforts to influence legislation on the gig economy in Europe. The companies had hoped to reach an arrangement similar to one struct in Italy, in which they offered minimum pay and other benefits to couriers, but avoided reclassification of their workers as employees.The proposals could set a precedent, with the European Union’s executive branch having warned that it will put forward legislation on work through digital platforms by the end of the year unless companies negotiate with their workers.