There are many synonyms for the phrase "worked over", which generally implies putting in a lot of effort or time into something. Some alternatives include "put through the wringer," "worked to the bone," "put in overtime," "toiled tirelessly," "poured all their energy into," and "bent over backwards." Other phrases that convey the same level of hard work and dedication include "worked their fingers to the bone," "burned the midnight oil," "put their nose to the grindstone," and "sweated it out." Depending on the context, any of these phrases could be used in place of "worked over" to accurately convey the message of someone putting in a lot of effort.