<menuContribution locationURI="toolbar:myorg.plugin.bottomview">
      	<control
           id="myorg.plugin.control.label"
           class="myproduct.plugin.LabelMessageContributor">
        </control>
      </menuContribution>

public class LabelMessageContributor extends
                            WorkbenchWindowControlContribution {

    /**
     * ..Whatever..
     */
    @Override
    protected Control createControl(Composite parent) {       
        Label label = new Label(parent, SWT.None);
        label.setLayoutData(new GridData(GridData.BEGINNING,
                                            GridData.CENTER, true, true));
        label.setBounds(label.getBounds().x, label.getBounds().y,
                                            150, label.getBounds().height);       
        
        return label;
    }

    @Override
    protected int computeWidth(Control control) {
        return 250;		
    }
}