Dustin Collins had to push back his morning meetings.

Jermaine Yates said he was going to have to explain to his boss why he was late for work -- for the third time in a week.

"My boss doesn't want to hear it," Yates, 33, of Brentwood, said Monday morning.

Yates, Collins and other passengers were all on the platform at the Hicksville station waiting for trains Monday.

A derailment just west of Jamaica station Sunday caused the delays, Long Island Rail Road" id="ORGOV0000002">Long Island Rail Road officials said, and prompted the railroad to cancel a dozen morning rush-hour trains Monday. Delays of 5 to 10 minutes on other trains were also reported.

Some evening trains will be canceled as well, said the LIRR, which will update the prospects for the evening commute at an afternoon briefing.

"Somebody is not doing their job properly," said global investment banker Rana Kahn, 60, of Syosset, who was waiting for a train to Penn Station Monday morning.

Kahn said commuters are concerned about the system.

Collins, 28, of New York)" id="PLGEO1001008040133901">Huntington, agreed.

"The delays are horrible," Collins said, as he stood at Hicksville waiting for a train to Flatbush" id="PLGEO100100802012700">Flatbush Avenue, Brooklyn. Collins noted that because his regular train was canceled Monday his commute was going to take almost two hours.

Railroad spokesman Rich Mendelson said crews were still working to re-rail three train cars that derailed west of Jamaica station on Sunday and only then would officials be able to determine the extent of the damage to the tracks.

He warned that officials already expected the situation to impact the evening rush hour.

The derailment on Sunday occurred at 12:20 p.m. just west of Jamaica station, when a train bound for Huntington jumped its tracks as it approached the platform. The station has a speed limit of 15 mph.

No one was hurt in the accident, which railroad spokesman Joe Calderone said Sunday caused major damage to rails and switches at Jamaica station. Jamaica is the largest hub in the system. In addition to those delays the railroad also is running "extremely limited" service from Flatbush Avenue in Brooklyn on Monday.

Federal Railroad Administration officials are investigating the derailment, which is the second accident at the same station in a week -- and the third this year. On Wednesday, two westbound trains side-swiped each other causing minor injuries to five passengers.

In March, two eastbound trains had a low-impact collision just west of Jamaica. No injuries were reported.

The derailment on Sunday shut down service in both directions for about 90 minutes.

"We were lucky," said Gerry Bringmann, chairman of the LIRR Commuters Council. "Thank God this happened on a weekend. The fact that we have two [accidents] within four or five days - that's scary stuff. We're just hoping that this is a wake-up call for the railroad to fix what's wrong."

The canceled westbound morning rush-hour trains included: The 6:25 a.m. train from Hicksville, scheduled to arrive in Penn Station at 7:11 a.m.; the 6:26 a.m. train from Massapequa Park" id="PLGEO0000708NY">Massapequa Park, scheduled to arrive in Penn Station at 7:22 a.m.; the 6:57 a.m. train from Freeport" id="PLGEO100100803010000">Freeport, scheduled to arrive in Penn Station at 7:40 a.m.; the 7:23 a.m. train from Hempstead, scheduled to arrive in Flatbush Avenue at 8:20 a.m.; the 7:29 a.m. train from Freeport, scheduled to arrive in Penn Station at 8:13 a.m.; the 7:40 a.m. train from Ronkonkoma, scheduled to arrive in Flatbush Avenue at 9:01 a.m.; and, the 7:43 a.m. train from Merrick" id="PLGEO0000713NY">Merrick, scheduled to arrive in Penn Station at 8:31 a.m.