Bus service was still drastically reduced Tuesday morning as Phoenix and Tempe entered the fourth day of a transit strike.

Phoenix reported bus levels at 14 percent during the 9 a.m. commute, with an increase to about 19 percent about 10:30 a.m. Service levels in Tempe were better, with the city reporting service running at about 30 percent.

The FLASH, which serves Arizona State University, is running today after no service yesterday.

Drivers represented by Amalgamated Transit Union Local 1433 went on strike against Veolia Transportation Services on Saturday, hitting 50 of the 101 Valley Metro routes with no service or reduced service.

Union officials say they are on strike to protest the company's unfair labor practices. With several complaints filed against the company with the National Labor Relations Board, union leaders say the company shouldn't have forced its "best and final" offer on drivers in November and have accused Veolia of bad-faith bargaining. Veolia officials say union leaders are demanding more in wages.

About 640 Phoenix bus drivers and 310 Tempe bus drivers have been on strike after nearly two years of labor talks with Veolia broke down last week. The union and Veolia are expected to continue negotiations at 1 p.m. today. The last time both sides met was Friday.

Both sides said they are committed to resolving the matter.