Application.java

package controllers;

import play.*;
import play.mvc.*;
import java.util.*;
import models.*;
import jobs.*;

public class Application extends Controller {

    public static void index() {
		Blah blah = new Blah();
		blah.name = "woo";
		blah.save();
		blah.em().flush(); // with or without, same result

		// Works, but then I have to reload all of my entities 
		// JPAPlugin.closeTx(false); JPAPlugin.startTx(false);
		//
		// blah.name = "woo2";
		// blah.save();
		
		new DumbJob(blah.id).now();
		new DumbJob(blah.id).in(5);
        render();
    }

}

Blah.java

package models;

import play.db.jpa.Model;
import javax.persistence.*;

@Entity
public class Blah extends Model {
	public String name;
}

DumbJob.java

package jobs;

import play.jobs.Job;
import models.Blah;

public class DumbJob extends Job {
	private long id;
	
	public DumbJob(long id) {
		this.id = id;
	}
	
	@Override
	public void doJob() {
		System.out.println("ID: " + id);
		System.out.println("Found: " + Blah.findById(id));
	}
	
}

output.txt

16:18:54,361 INFO  ~ Application 'tester' is now started !
ID: 7
Found: null
ID: 7
Found: Blah[7]