FOR Lee Hunter, next weekend's Baltimore Workers' Heritage Music Festival is a definite love of labor: A year in the making, it will provide the largest forum for labor music and songs of work in American history. It will be held Friday through Sunday at Dundalk Community College.

"It's a hard time for working people and people in the labor movement," says organizer Hunter. "Somebody has to do something to turn things around. We'll show a different picture of the American worker and the unions: You could consider this a post-Solidarity Day event."

The festival, with musicians and attendees from all over the country, also will draw from the wealth of committed Washington musicians: Hazel Dickens, Joe Glazer, Mike Seeger and Bobbie McGee perform at Saturday night's concert, while Sweet Honey in the Rock and Celtic Thunder join Si Kahn and Sparky Rucker Sunday afternoon.

On Saturday, more than 50 musicians and scholars will participate in a series of workshops, which are free and open to the public, thanks to a grant from the Maryland Committee for the Humanities, and the weekend will be taped for future broadcast by National Public Radio.

Tickets, available locally at the House of Musical Traditions in Takoma Park, are $7 for the entire festival (or $4 for a single concert). Call 270-9800.