Janitors in Houston have ended a more than month-long strike with an agreement on a new labor contract to increase their pay. The strike began in July after workers making $8.35 an hour said they faced harassment and intimidation when they rejected an offer that would have raised their pay by just 50 cents an hour over five years. The Service Employees International Union says the janitors have ratified a new contract that will raise their hourly wages by one dollar over four years.