Jamaica Public Service Company (JPS) workers at power stations across the country have been on sick out.
The workers, who are upset over the company's decision to change the job titles of persons working in the systems control department, have been calling in sick since Sunday night.
They were given letters on Friday by the management indicating that their job titles had been changed.
However, the Union of Clerical Administrative and Supervisory Employees (UCASE), which represents the workers, says the change of job titles is a ploy by management to get the workers out of the union.
"When we looked at the proposed changes that the company indicated, to us, it did not give rise to what they were proposing to elevate them to the level of managers and would thus take them out of UCASE. When we looked at the existing job description and the new ones proposed, the substantive job remains in place, remains the same.
"We therefore indicated to the company that that was a matter we needed to discuss ... whether it would be giving the employees affected additional compensation for the new duties it wants them to perform," said Robert Harris, Senior Negotiating Officer at UCASE.
He added that the job titles were changed despite meetings with the management of the company on the matter.
According to Mr. Harris, the move by the management of JPS will undermine the union's ability to represent the workers.
The Ministry of Labour has summoned the union and management of the company to a meeting on Monday afternoon to discuss the matter.
The workers currently have a case at the Industrial Dispute Tribunal (IDT) regarding an outstanding reclassification exercise which should have resulted in the company paying the workers a total of $2.3 billion.
The IDT is to rule whether the JPS should pay overtime and redundancy payments to workers whose jobs were reclassified.