Lord taught the parable of Workers. (Matthew 20:1-16) They were truly willing workers. All disciples of Lord Jesus Christ are expected to be willing workers/volunteers/laborers/harvesters in His vineyard.
Motivation: The workers were out of their homes and were present in the labor market, where daily wage earners were recruited. They were eager to work. If not, they would have been lying on their bed in their home. They could have given excuses like a lazy man. (Proverbs 22:13; 26:13) As Paul writes, disciples are compelled by His love to go out to touch and transform the lives of the people. (II Corinthians 5:14)
Hope: When the first batch of workers was hired in the morning, they could have been disappointed. However, they did not return home. Instead, they waited with hope, even though no one hired them. Waiting was not wasting but allowing God to transform us and order the context.
Tools: Those who go to work, should have the tools. Probably, they had sickles, baskets…etc. Specific tasks need specific tools. Procuring, developing, and creating tools is the prerogative of the workers. The tools should be maintained well, and ready to use. For the people of God, the Word of God is the tool for mission. Of course, they have other pieces of armament too.
Skills: The workers should know how to use tools effectively. Some people may have tools but may not have the right skills and attitude to use the tools. A sword or a gun, not used appropriately could harm or kill the handler.
Fitness: Workers should be physically fit to go into the field, be involved in the hard work under the hot sun, and carry the harvest to the barns. Spiritual fitness of fully wearing the armor of God, standing by his grace, and fervent prayers help to resist evil and resist Satan. (Ephesians 6: 10-18; James 4:7)
Master is just: The workers trusted that the owner would be just and reasonable. God is just and will not forget the labor of love of the saints. (Hebrews 6:10)
Am I a willing worker for the Lord?