CHICAGO (AP) _ The Chicago Tribune has reached tentative agreement with a striking printers union and also plans to hire 19 pressmen to comply with court rulings in a separate, three-year-old labor dispute, the company said.

The Chicago Typographical Union No. 16 has tentatively scheduled a contract ratification vote for Jan. 10, which could end the union's 29-month strike against the newspaper.

The new accord calls for paying a lifetime annuity of about $500 a month to 122 printers who remain on strike, the newspaper said. Another 57 printers, who returned to work in early 1986, could remain on the job under a new contract or accept a cash buyout of $30,000 per person if they decide to leave work within 30 days, the Tribune said.

The company's decision to hire the 19 pressmen stems from a 1984 grievance filed by Chicago Web Printing Pressmen's Union Local 7. The grievance was filed after the newspaper promoted 19 apprentices to journeymen rather than hire 19 journeymen from the union hiring hall, which the union contended was required under its contract.

In March 1985, an arbitrator ruled on behalf of the union and the company appealed unsuccessfully to the U.S. District Court and the 7th Circuit Court of Appeals.

The newspaper informed the union Wednesday that the 19 workers on the original hiring hall list were to report for orientation at the newspaper's printing plant on Monday.