Unite protest outside Ratcliffe-on-Soar power station
About 120 construction workers gathered outside a Nottinghamshire power station in a protest about new contracts.
They claim contractor at the Ratcliffe-on-Soar power station, SPIE Matthew Hall, has told employees to sign new contracts or leave.
The Unite union, which organised the event, said the contracts would merge grades and cut salaries by 30%.
Police said the protest had now ended. SPIE Matthew Hall has declined to comment.
Steve Syson, from the Unite union, said: "The workers are facing dismissal or 30% pay cuts and clearly these guys feel totally aggrieved about it.
"We tried to sit down with the employers to renegotiate the terms and we're open to talks with them but unfortunately they're not taking place."
Campaigners handed out leaflets at the roadside.
The protest caused some delays on the A453 near the power station on Friday morning.