(AP) - Bargaining resumed for a second day Friday in a contract dispute that could result in doormen, elevator operators and cleaners for 1,000 office and commercial buildings in New York City walk out on New Year's Day.

''We still remain pretty far apart on wages,'' said Kate Ferranti, a spokeswoman for the Local 32BJ of the Service Employees International Union. ''We will focus on that today.''

The union says the workers' wages are trailing inflation and don't reflect the booming value of the buildings where its 26,000 members work, mostly in Manhattan.

But the Realty Advisory Board says the workers have better total wage and benefit packages than their counterparts around the country, and are beating inflation when the value of such benefits as health insurance is factored in.

Ms. Ferranti said the two sides made some progress on Thursday during four hours of talks.

''We're pretty close on other issues, but wages are where we need to see some progress,'' she said. ''We believe what they offered us is inadequate. It's an expensive city and working people need to be able to live here with their families.''

Both sides say they are prepared to talk through the weekend, if necessary.

The workers average $40,500 a year, but their total wages and health and pension benefits average $55,000 a year. The realty board says the workers pay nothing toward their health insurance costs.

''We have made what we believe to be a substantive offer,'' RAB president James Berg said Thursday. ''Our proposal must be looked at as a package, not just wages alone.''

A walkout would affect about 1,000 buildings, including the World Financial Center in lower Manhattan and the MetLife building in midtown.